Moreover, astronauts are constantly rotating and won't stay on Mars for long.
The residents inside Mars City are completely different; if they are always confined to enclosed buildings, it's likely someone will go insane before long.
Therefore, Mars City must have a certain amount of external space for residents to move around.
Finally, Jiang Cheng settled on the current design plan, where all the buildings are situated in an open environment.
Jiang Cheng plans to arrange ordinary buildings inside Mars City, identical to those on Water Ball, and not have them all sealed.
But such a design requires a protective layer in the outer area to isolate the entire city from the outside environment.
So Jiang Cheng came up with a solution: to protect the city by building a dome.
Jiang Cheng plans to construct a massive dome in the outer area of the city to surround it.
This way, the outside low temperatures and unbreathable air will no longer affect the humans inside the city.
