In Jiang Cheng's previous life, there were countless alien planets he had visited.
The civilization in Jiang Cheng's previous life was much more advanced than humanity's, and the places he could go to were also many.
Back then, for the sake of his research career, Jiang Cheng didn't know how many planets he had studied.
Among them were planets with environments thousands of times harsher than Mars, and Jiang Cheng had been to many such planets.
Some planets had pressures thousands of times that of Earth, which could even crush iron into fragments.
Some planets had temperatures reaching thousands of degrees during the day, but at night would drop to below minus two hundred degrees.
There were even planets where the forces reached a limit, making it almost impossible to move without tools, an environment that was truly unbearable.
