From such a "strapped" record of departure, it is not difficult to see that the technological level on Mars, especially the aerospace technology level, was not very high. It was very likely still in the primitive power stage, without any new technology emerging.
That meant that humanity's steps had not yet ventured out of the Solar System, although compared to the previous dreams, there was some progress, at least they had reached Mars.
Wei Shengjin said the Martians did not want to return to Earth to live, which Lin Xian could understand.
Just like in 2024, if you asked who wanted to live on Mars... there would probably be very few volunteers. Everyone still considered Earth their home, subconsciously preferring it.
The same logic applied.
The Martians would definitely prefer Mars, even if Earth was slightly better. But, after all, Earth was primitive and backward, without electricity, no networks, no advanced transport... How could it be more comfortable than nesting on Mars?