If he used his superpower, of course, he could easily get money. But even though he has lost his memory, Shen Mochen's mind is still clear; his current predicament is definitely related to his superpower.
Therefore, it's best for him not to casually reveal his superpower, or rather, not to display any aggression or threat. He could certainly overturn the entire Saint Mary City, but he has no intention of being buried with this city.
Likewise, he cannot stay in the safe house forever. If the people behind think he's not dead, sooner or later they will find Xiao Xingshuang.
Instead of sitting around in fear and waiting for doom, it's better to take the initiative and fight for survival.
If the people behind want to kill him because of his superpower, why can't they spare him because of it too? He is well aware of his own value; a living Shen Mochen is a million times more valuable than a dead one.
