There are so many people who immigrate to the moon, where they live and what they eat.

It is estimated that the things planted in the lunar soil will only be better than the earth, because the nutrition is too rich. There are all kinds of resources. There seems to be dry ice water on the moon, but it is rare. There is one at the north pole and one at the south pole of the moon. Also, if you immigrate to the moon, it is impossible to immigrate on a large scale. Only a small closed ecosystem can be established. It is best to use craters to build a lunar base, so as to make better use of the geographical environment and easily build an ecological circle.

The reason why the moon can't migrate on a large scale is because the moon's gravity is too small to keep the atmosphere. If you want to migrate on a large scale, Mars and Venus are the best choices. Mars is easier to transform than Venus, because Venus's atmosphere is too thick, and the atmospheric pressure is very high, and sulfuric acid fog is everywhere. Before people go down, atmospheric pressure kills them. So Venus is more difficult to transform. If it is Mars, it will be much easier, because the atmosphere of Mars is very thin, not because of gravity, so the first step can be to increase the density of the atmosphere of Mars. For example, a nuclear bomb can be placed on the surface of Mars to detonate its extinct volcano on a large scale, so that a large amount of gas will explode inside Mars and produce a large amount of carbon dioxide, which will lead to the greenhouse effect on the surface of Mars. Once the greenhouse effect is produced, the temperature difference between day and night on Mars will be reduced, and the average temperature will reach an ideal level, so that the glaciers in the north and south poles of Mars will melt and Mars will form a primitive ocean. After that, a large number of green algae and cyanobacteria will be taken out from the earth, put into those primitive oceans, absorb harmful gases, gradually discharge oxygen, and transform for a hundred years, thus carrying out large-scale immigration.

At best, the moon can only be used as a transit station or a place to exploit resources.