人口

Demographics in a multispecies empire

Population, also known as  人口（Pop）s, is the center of productivity and political action within an empire. They provide resources by working in  Jobs created by  区划（District）s and  建筑（Building）s, and also produce  凝聚力（Unity） if they are part of a specific  派系（Faction）.

Demographics

Each planet has four variables that determine its demographic direction. A planet can have only one growing pop, one declining pop and one assembling pop at any time.

Growth as a function of planet capacity and population

Pop growth represents the increase in population from natural reproduction and immigration. A new pop appears after [math]\displaystyle{ 100 + (\text{growth required scaling} \cdot {\text{total empire population}}) }[/math] growth points have been accumulated; the growth required scaling is a game setting. The base growth rate is determined by the Planet Capacity of the planet and the number of pops on the planet, and then pop growth modifiers are applied, and lastly pop growth from immigration/emigration is added/subtracted. The logistic growth ceiling game setting determines the maximum base growth.

Any species existing on the planet or which has immigration access to the planet may be selected to grow there. When choosing a species to grow, planets will generally prioritize species that are under-represented on the planet and have citizenship equal to that of the already existing species. If immigration access is lost to all planets containing the currently selected species, a new species will be selected and all existing growth progress will be erased. Species can be chosen manually for growth if the Population Controls policy is set to Allowed.

 宜居性（Habitability） is an important pop growth modifier. Pops with very low habitability for a planet will only slowly reproduce or migrate to it or may not at all.

Pop growth stops when a planet is 15% overcrowded and has 5 Pops without Housing. Pops start to decline when a planet is 25% overcrowded.

Planet Capacity is capped at 500, regardless of free housing or unblocked districts. However, Pops over 500 will not stop growing or decline until required housing exceeds available housing by 15% or 25%, as normal.

Base population growth formulas
Condition	Formula
[math]\displaystyle{ \frac{{\text{planet capacity}}}{2} \gt {\text{planet population}} }[/math]	[math]\displaystyle{ \text{total base growth} = 3 \cdot \max (0.125 \cdot (\text{population} - \frac{\text{population}^2}{\text{planet capacity}} - 1) , 1) }[/math]
[math]\displaystyle{ \frac{{\text{planet capacity}}}{2} \le {\text{planet population}} }[/math]	[math]\displaystyle{ \text{total base growth} = 3 \cdot 0.125 \cdot (\text{population} - \frac{\text{population}^2}{\text{planet capacity}} - 1) }[/math]

With total base pop growth between 0.3 and [math]\displaystyle{ (\text{logistic growth ceiling} \cdot 3) }[/math] (default 4.5) growth per month. Pop growth modifiers, including habitability penalties, are then applied, and then population growth from immigration/emigration is added/subtracted.

Pop decline represents the decrease of certain species on the planet due to purging or severe overcrowding. A pop will disappear after 100 decline points have been accumulated. By default, decline rate is −5 decline points per month. Overcrowded planets that have over-represented species will have those species begin to decline in numbers and be replaced by newly growing, under-represented species that have equal citizenship. Purging a particular species will cause that species to decline more rapidly depending on the purge species right.

Pop assembly represents a planet's capacity for constructing  机械体（Mechanical）,  机械（Machine）, or Biological pops. Pop assembly can assemble either robotic or biological at a given time; both can not be produced simultaneously. Once ([math]\displaystyle{ 100 + (0.25 \cdot {\text{total empire population}}) }[/math]) Assembly Points are reached a new robot pop is created on the planet. Non-sentient robotic pops do not migrate but can create overcrowding and unemployment. The constructed template is the one with the highest number of used trait points but can always be changed manually.

Robotic pop assembly

•  机器人专家（Roboticist） Jobs add +2 Monthly Robot Pop Assembly Points
•  复制者（Replicator） Jobs add +1 Monthly Robot Pop Assembly Points
• Robotic Pop Assembly is affected by traits and other modifiers

Organic pop assembly

•  繁殖工蜂（Spawning Drone） Jobs add +2 Monthly Biological Pop Assembly Points
•  克隆仓（Clone Vats） buildings add +3 Monthly Biological Pop Assembly Points
• Ancient Clone Vat buildings add +2 to +15 Monthly Biological Pop Assembly Points
• Biological Pop Assembly is not affected by any traits or modifiers except for the following:
  • +5% per  医务工作者（Medical Worker） Job
  • -25% from  石质（Lithoid）
  • -75% from  尸化体（Necrophage）

Migration

Migration is calculated by subtracting emigration push from immigration pull, both of which are determined by factors such as  住房（Housing）,  稳定度（Stability） and Unemployment. A planet with more emigration than immigration will have its  growth speed lowered and the amount lowered will be added to potential immigration targets. Planets with higher immigration pull will receive a greater share of this migration, which is converted directly into pop growth. Signing a  移民协议（Migration Treaty） will allow migration to and from another empire and accepting refugees will also create immigration from planets outside the empire borders. A newly colonized planet gains +100 immigration pull and divides a total of +50 emigration push between all developed planets, until 15 years have passed or the colony has 10  Pops.

Growth weight

The exact mechanics by which a new pop is selected for growing/assembly is not fully known. However a bunch of values can be extracted from the Stellaris/common/defines/00_defines.txt file.

Name	Value	Description
New_Pop_Species_Randomness	0.5	The higher this is, the more random species selection of new pops will be
New_Pop_Same_Species_Weight	1.0	The higher this is, the more new pops will be weighted by number of same or subspecies pops
New_Pop_Exact_Species_Weight	0.5	The higher this is, the more new pops will be weighted by number of exact same species pops
New_Pop_Slavery_Weight	0.25	The higher this is, the more new pops will tend to be balanced between enslaved and non-enslaved species
New_Pop_Species_Div	0.05	The higher this is, the more planets will tend to grow species that are underrepresented on the planet
New_Pop_Habitability_Threshold	0.75	If habitability is under this, apply exponentially increasing penalties to new pop weight
New_Pop_Homeworld_Mult	2	Pops have increased weight for growing on their homeworld
New_Pop_Growth_Mod_Mult	0.33	How much does species growth mod trait matter for new pop weight
NEW_POP_Immigration_Mod_Mult	1	How much does species immigration growth mod trait matter for new pop weight (when there is immigration)
Pop_Decline_Threshold	3.0	A species will decline when there is another species with a growth priority this many times higher

Resettlement

Resettlement is the process of pops moving from one planet to another, more desirable one.

Forced resettlement

If the empire's policies allow it, forced resettlement will instantly move a pop from one planet to another. This costs an amount of  能量币（Energy Credits）, modified by the pop's stratum. Non-enslaved Pops also cost  凝聚力（Unity） to be resettled. Resettlement cost can be modified by the following:

Source	Cost
Evacuation Protocols edict	−50%
Appropriation tradition	−33%
Operational Proxies tradition	−33%
徭役制（Corvée System） civic	+0%	−100%
仰望星空（Starborn） trait	−25%
四海为家（Nomadic） trait	−25%
安土重迁（Sedentary） trait	+25%
奴隶（Slave）	−50%	−100%

Automatic resettlement

Sapient, unemployed, free pops have a chance (each month) to automatically resettle to another planet with available jobs and housing and suitable habitability. If a  奴隶处理设施（Slave Processing Facility） is active on the planet, enslaved pops and robots in servitude are also eligible.

 移民控制（Migration Controls） will prevent this (except for sapient robots). Empires that outlaw slavery (and hence the slave processing facility) cannot enable automatic resettlement for robots in servitude.

A  运输枢纽（Transit Hub） starbase building will increase the monthly chance of a pop automatically resettling.

Happiness

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Each pop in an empire has a  幸福度（Happiness） rating. It ranges from 0% to 100% and has a base level of 50%. Happiness determines approval rating when combined with Stratum  政治权力（Political Power）, as well as the following effects:

• Each point of Happiness above 50 adds +1%  主流思潮吸引力（Governing Ethics Attraction） to free pops and +2%  威权主义（Authoritarian） ethics attraction to slaves.
• Each point of happiness below 50 adds −1%  主流思潮吸引力（Governing Ethics Attraction） to free pops and +10%  平等主义（Egalitarian） ethics attraction to slaves.
• Each point of happiness above 50 gives each pop −0.02  犯罪与异常（）, up to 0 per pop at 100% happiness.
• Each point of Happiness below 50 gives each pop +0.02  犯罪与异常（）, up to +2 per pop at 0% happiness.

Fortunately, there are many ways to improve happiness in an empire. Planetary  法令（Edict）s, civics,  生活标准（Living Standards）, permanent modifiers,  行星修正（Planet Modifier）s, and ruler traits can positively affect happiness. Events may have an impact on planetary or empire happiness for a limited time as well.

Approval rating

Pop approval rating is a measure of the population's support towards the empire. It is determined by the average  幸福度（Happiness） of each stratum, weighted by  政治权力（Political Power）. Pops without happiness are treated as having 50% happiness.

Approval rating ranges from 0% to 100% and has a base level of 50%.

• Each point of approval rating above 50% adds +0.6  稳定度（Stability）, up to +30 at 100% approval rating.
• Each point of approval rating below 50% adds −1  稳定度（Stability）, up to −50 at 0% approval rating.

Upkeep

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Most organic pops consume   1 食物（Food） per month, while  石质（Lithoid） pops consume   1 矿物（Minerals） per month.  Robots instead consume   1 能量币（Energy Credits） energy per month. In addition, organic pops that are not part of a  格式塔意识（Gestalt Consciousness） empire require a certain amount of  消费品（Consumer Goods） based on their living standards. Synthetics that are given citizen rights require them as well.

Pops with the  光合作用（Phototrophic） trait replace half their food upkeep with  能量币（Energy Credits） upkeep. The same is true of pops with the  辐射合成（Radiotrophic） trait, except the latter require no energy upkeep when living on a  死寂星球（Tomb World）.

Housing

 住房（Housing） represents the living space available for pops to live comfortably. Housing is primarily provided by districts, with  城市区划（City District）s giving more housing than their resource-focused alternatives. Each pop requires 1 unit of housing by default but the housing demands of individual pops can change due to a variety of factors. If the number of pops exceeds the amount of housing it will cause  稳定度（Stability） to drop by [math]\displaystyle{ 40 \cdot \frac{\text{missing housing}}{\text{total housing required}} }[/math] and a flat +50 planet emigration push.

As a rule of thumb, each resource district exactly pays for itself in terms of housing, while the pops that work building jobs need city districts (or housing buildings) for their housing, though the capital building provides some buffer before cities are needed. This applies equally to  都市星球（Ecumenopolis）es. The  田园牧歌（Agrarian Idyll） civic gives extra housing to resource districts, allowing the empire to house its pops working building jobs mostly via resource districts.

Amenities

 舒适度（Amenities） represent the infrastructure and jobs dedicated to fulfilling the needs of the population. Individualist empires obtain amenities from a variety of jobs while  格式塔意识（Gestalt Consciousness） empires obtain them primarily from  维护子个体（Maintenance Drone） jobs. High amenities grant increased  幸福度（Happiness） to free pops in regular empires and increased stability in  格式塔意识（Gestalt Consciousness） empires, while insufficient amenities will lower them. Amenity value will be rounded to nearest integer.

The formula for extra amenities contributing  幸福度（Happiness） is [math]\displaystyle{ \text{min}\left(20\%, \left\lfloor\frac{20 \cdot \text{extra amenities}}{\text{total amenities consumed}}\right\rfloor \div 100\right) }[/math]. In other words, it scales from +0% with 0 extra amenities, to +20% with twice as many amenities as necessary.

The formula for missing amenities contributing  幸福度（Happiness） is [math]\displaystyle{ \text{max}\left(-50\%, \left\lfloor\frac{-2/3 \cdot \text{missing amenities}}{\text{total amenities consumed}}\right\rfloor \right) }[/math]In other words, it scales from +0% with 0 missing amenities, to −50% when the planet have less than 25% of amenity needed.

Amenities can be affected on an empire-wide basis by the following:

Source	Amenities
人工道德规范（Artificial Moral Codes） technology	+5%
Executive Retreat branch office building	+10%
Resort World	+15%
Profane Consecrated World	+1%
Respected Consecrated World	+2%
Venerated Consecrated World	+3%
Holy World Consecrated World	+4%
Mega Art Installation (stage I)	+5%
Mega Art Installation (stage II)	+10%
Mega Art Installation (completed)	+15%
Mega Art Installation (perfection)	+20%
Vultaum Star Assembly secrets special project	+20%

Source	Amenities usage
万众一心（One Vision） ascension perk	−10%
Vultaum Reality Perforator relic	−10%
生态保护（Ecological Protection） resolution 2	−5%
Discourage Planetary Growth decision	+25%

Stratum

Strata represent pops' social classes. The higher a pop's stratum, the more political power they have and the more  消费品（Consumer Goods） they require for upkeep, according to their living standard. It also determines the resettlement cost. Resettlement costs no  影响力（Influence） if the empire has the  徭役制（Corvée System）,  意志整合（Subsumed Will）, or  空中下载升级（OTA Updates） civic.

If a pop takes a job above its stratum it will be promoted to the higher stratum. If there are no available jobs of equal or higher Stratum the pop will become unemployed, slowly demoting in stratum and causing  幸福度（Happiness） penalties at most levels of living standards.  奴隶（Slave）s demote instantly, however.

Stratum	Hierarchy position	Resettlement cost	Requirements	Output modifiers
统治者（Ruler）	1	500 Energy 50 Influence	格式塔意识（Gestalt Consciousness）	Modifiers0 +10%  影子内阁（Shadow Council） civic +5%  尸化体（Necrophage） trait
专家（Specialist）	2	250 Energy 25 Influence	格式塔意识（Gestalt Consciousness）	Modifiers0 +15%  虚空居者（Void Dweller） species trait (on  habitats) +10%  精英政治（Meritocracy） civic +10%  极端平等主义（Fanatic Egalitarian） ethic +10% Academic Privelege living standards +5%  平等主义（Egalitarian） ethic +5%  尸化体（Necrophage） trait +5% Creative Collective tradition
劳工（Worker）	3	100 Energy 10 Influence	格式塔意识（Gestalt Consciousness）	Modifiers0 +15%  虚空居者（Void Dweller） species trait (on  habitats) +10%  极端威权主义（Fanatic Authoritarian） ethic +5%  威权主义（Authoritarian） ethic +5% Workplace Motivators tradition +10% Rural World designation +5%  非常强壮（Very Strong） species trait +2.5%  强壮（Strong） species trait +2.5%  工业发展（Industrial Development） resolution 1 +5%  工业发展（Industrial Development） resolution 2 +7.5%  工业发展（Industrial Development） resolution 3 +10%  工业发展（Industrial Development） resolution 4 -2.5%  纤弱（Weak） species trait -10%  尸化体（Necrophage） trait
复合子个体（Complex Drone）	1	100 Energy 10 Influence	格式塔意识（Gestalt Consciousness）	Modifiers0 +20% Manufacturing Focus production policy +5% Machine Capital designation +5% Nest Planet designation +5% Machine Nexus designation +5% Peak Performance tradition -20% Extraction Focus production policy
低级子个体（Menial Drone）	2	100 Energy 10 Influence	格式塔意识（Gestalt Consciousness）	Modifiers0 +20% Extraction Focus production policy +10% Fringe Planet designation +5% Machine Capital designation +5% Hive World designation +5% Machine World designation +5% Drone Network tradition -20% Manufacturing Focus production policy
活体陈设（Bio-Trophy）	1	100 Energy 10 Influence	Organic species in a  失控机仆（Rogue Servitor） empire	Modifiers0 +10% Send Artifacts to Organic Sanctuaries decision
不可接触者（Undesirable）	0	50 Energy	Undesirables  公民权（Citizenship）
同化（Assimilation）	0	50 Energy	Assimilation  公民权（Citizenship）
罪犯（Criminal）	0		High  犯罪与异常（）
反常工蜂（Deviant Drone）	0		High  犯罪与异常（） in  蜂巢思维（Hive Mind） empires
腐化子个体（Corrupt Drone）	0		High  犯罪与异常（） in  机械智能（Machine Intelligence） empires
Pre-sapient	0		Pre-sapients
Precursor	1		Fallen Empire
Primitive	2		Alien pops on The Preserve

Slavery

Entire species can be enslaved by giving them a certain citizenship, which opens a new tab in the Species Rights menu called Slavery Type that determines what are the effects of slavery.

公民权（Citizenship）	Slavery requirements	Notes
Slaves	Species is alien and the empire is Authoritarian, Xenophobe or  格式塔意识（Gestalt Consciousness）
Servitude	Species is robot and the empire has the Servitude Artificial Intelligence policy	If  智械黎明故事包（Synthetic Dawn Story Pack） is installed it may cause an AI rebellion.
Any	奴贩公会（Slaver Guilds） or  契约资产（Indentured Assets） civics	Up to 35% of the pops are enslaved if the world does not have enough pops with the Slaves or Servitude citizenship

Grid Amalgamation

Enslaved pops also use only 0.75 amenities and 0.75 housing (instead of 1), which can be further reduced if the  奴役类型（Slavery Type） is Servitude or Livestock. They also get −50%  强制迁移花费（Resettlement Cost）. Enslaved pops cannot join factions and have only 25%  政治权力（Political Power）, or 18.7% if a Slave Processing Facility is present on the planet. However they can still increase  犯罪与异常（） if they're too unhappy.

Low  稳定度（Stability） is more dangerous when enslaved pops are present on a planet. Normally dangerous events can only occur if it's lower than 25 but if any pop is enslaved it must be kept above 40.

Slave output can be affected by the following:

Source	Slave output	Note
奴贩公会（Slaver Guilds） civic	+10%
契约资产（Indentured Assets） civic	+10%
铁拳（Iron Fist） governor trait	+10%
Extended Shifts edict	+10%	Actual bonus is +20%, see below
Slave Optimization agenda	+10%
Workplace Motivators tradition	+5%	Actual bonus is +10%, see below
奴隶处理设施（Slave Processing Facility） building	+5%
Hunger Strike planet modifier	−50%
Slave Riots planet modifier	−1000%

Slaves, Workers and Specialists

In addition to the Slave resource output modifiers, Worker resource output modifiers can also affect Slaves in worker jobs. As of 3.0.1 Slaves in Specialists jobs are affected by specialist output modifiers but not by Slave resource output modifiers, if in Indentured Servitude.

• Slaves working on  矿工（Miner） jobs can benefit from  劳工（Worker） resource output modifiers, such as  威权主义（Authoritarian） and  强壮（Strong）.

If a modifier affects the resource output of both Workers and Slaves, it actually affect Slaves in Worker jobs twice.

• The Extended Shifts edict increases Slaves resource output by +10% and Workers resource output by +10%, resulting in an actual +20% bonus to Slaves in worker jobs.

Modifiers that affect Workers aside from the resource output ones don't affect Slaves.

• The Extended Shifts edict decreases Slaves happiness by −10% and Worker happiness by −10%. It does NOT cause the Slaves to suffer −20% happiness.

Ethics attraction modifiers

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 思潮转化（Ethics Shift） is where a pop or group of pops decide to follow a different ethic than the general population. A materialist pop may decide to follow a more spiritual path and a pacifist culture might decide that peace is the path of the weak.

Each pop in an empire will only embrace a single, non-fanatic ethic. At the start of the game, the population will be made of the empire's governing ethics. As population expands and eventually is divided over various planets and sectors, certain segments may decide to adopt values that are different from the core values of the species due to various circumstances in and around the empire.

Each ethic has a certain attraction value attached for all pops, depending on both the empire's situation and their own. Each pop can only switch ethics once per year. The exact values and options that influence the attraction levels of certain ethics can be found at Ethics attraction. The attraction factors of ethics can be amplified by certain circumstances such as policies or traits.

Having a positive ethics attraction effect will let all actions that increase attraction to the government ethics result in even more attraction, and negative amounts will be decreased. With a modifier of 50%, an action that would increase attraction by 2 would instead increase by 3.

Hovering over a pop's ethic will display the attraction towards all ethics.

Robots

Sentient humanoid robot

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Robots are artificial pops and can be constructed once the required technology becomes available. They have the  机械体（Mechanical） trait, giving them +200% habitability on any planet. Robots can be given new traits via robo-modding, and the species template with the highest number of used trait points will be built by default. A different template can be specified for each planet.

The jobs a robot can have are limited by the highest robot technology researched. If an empire researches the  合成人（Synthetics）nology, robots can be given sapience, which lets them be affected by  幸福度（Happiness） and have ethics.

Tech level	Maximum stratum	Can colonize	Sapient
机器人劳工（Robotic Workers）	劳工（Worker）
Droids	专家（Specialist） (except  研究人员（Researcher）,  官僚（Bureaucrat） and  文化工作者（Culture Worker） if AI policy is set to Outlawed)
Synthetics	统治者（Ruler） if AI policy is set to Citizen Rights  专家（Specialist） if AI policy is set to Servitude  专家（Specialist） (except  研究人员（Researcher）,  官僚（Bureaucrat） and  文化工作者（Culture Worker）) if AI policy is set to Outlawed		if AI policy is set to Outlawed if AI policy is set to Servitude or Citizen Rights

Robots without Citizen Rights require 50% less  住房（Housing） and  舒适度（Amenities） and do not need  消费品（Consumer Goods）. If a planet with sapient robots is captured by an empire that doesn't have the Synthetics technology, they lose their sapience, and if a planet with non-sapient robots is captured by an empire that has the Synthetics technology and does not have the Outlawed Artificial Intelligence policy, they are immediately given sapience. Note that non-sapient robots can do all specialist jobs with Droids tech, but not after researching Synthetics tech.

• It's possible to take the Synthetic Evolution ascension perk and turn all organic Pops and leaders into Synthetics.
•  蜂巢思维（Hive Mind） empires cannot build robots and will always purge all robots on their worlds.

• As long as an empire has the Artificial Intelligence policy set to Servitude there is a risk of them starting an AI rebellion.
•  机械智能（Machine Intelligence） empires cannot build robots but they can use them if conquered from a regular empire or bought on the slave market. Robots in a Machine Intelligence empire can work all jobs and are not affected by happiness.

Purges

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、​  不可接触者（Undesirable） 正在净化（Purging）s represent the systematic elimination of specific pops or entire species from an empire and can be done on a per pop or species basis.

Targeted pop purging still requires applying the species-wide  slavery at minimum and it is limited to a basic extermination, although without production penalty.  格式塔意识（Gestalt Consciousness） empires can purge their pops of any composition freely, with exception of Bio-Trophies.

Species-wide purging is done by setting the species'  公民权（Citizenship） to  不可接触者（Undesirable）.  格式塔意识（Gestalt Consciousness） pops in empires of different authority are forced to be set as Undesirables. Therefore, gaining planets from a  蜂巢思维（Hive Mind） empire means that the planet will be lost when it is empty of pop if there is not at least 1 Pop of the conquering empire's species on it. There are also four special cases:

• Pre-Sapients can only be purged if the Pre-Sapients policy is not set to Protected and they are automatically purged if it's set to Extermination.
• Robots are automatically purged if the Robotic Workers policy is set to Outlawed.
• Synthetics can only be purged if the Artificial Intelligence policy is not set to Citizen Rights.
• Empires with the  掌控进化（Evolutionary Mastery） ascension perk can change the citizenship of hive mind pops to  同化（Assimilation）, which prevents them from being purged.

Having any species-wide purge is a negative issue for Xenophile factions, aside from the case of  格式塔意识（Gestalt Consciousness） pops and outlawed Robots.

Each planet has a purge timer and it progresses depending on the purge type. When the timer runs out, an undesirable pop on the planet will be killed or displaced.  评价（Opinion） penalties will be applied, unless the purge type is Neutering or Displacement, or if the pop is  格式塔意识（Gestalt Consciousness） drone, outlawed robot, or pre-sapient.

• All empires that have the same primary species as the purged pop will have their  评价（Opinion） of the purger reduced by −25 per pop, to a maximum of −1000.
• All other empires that have Egalitarian or Xenophile ethics and don't allow species-wide purges will also have their opinion of the purger reduced by −5～10 per pop, to a maximum of −1000.

There are multiple types of purges available, determined by the  净化方式（Purge Type） species rights.

Refugees

Human refugees

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Pops from other empires may flee to escape purges, slavery, resettlement, crisis bombardment or as a result of land appropriation. Whether another empire is willing to accept those fleeing depends on its Refugees policy. Refugees will not head for empires where they have the Undesirables citizenship. Accepted refugee pops will get +20  幸福度（Happiness） for 10 years.

Once refugees are generated they will head for any empire that will accept them with their Refugees policy following the following order:

1.  宜居性（Habitability） at least 70% and  住房（Housing） at least 1
2.  宜居性（Habitability） at least 70%
3.  宜居性（Habitability） at least 50% and  住房（Housing） at least 1
4.  宜居性（Habitability） at least 50%
5.  宜居性（Habitability） at least 20% and  住房（Housing） at least 1
6.  宜居性（Habitability） at least 20%
7.  住房（Housing） at least 1
8. Any other planet

Pops with the  蜂巢思维（Hive-Minded） or  精神阉割（Nerve Stapled） traits cannot become refugees.

References

游戏概念