Having transmigrated into an ancient world of immortal cultivation, Wu Wang goes on a quest to find a cure for his curse against approaching women. Along the way, he will meet kings and emperors, spirits and youkai, until he finally reaches immortal nirvana. (Source: Tencent, translated)

Qin Chuan transmigrated into a mysterious fantasy world. Not only did he gain a son, Qin Zi, for free, but also a cheatcode - a system that made him stronger every time his son caused trouble. After discovering that Qin Zi was a weakling with immense plot armor, Qin Chuan started on an endless journey to troll his son… (Source: Webnovel)

The male protagonist crossed over to get the cursed system, which made him stronger as long as he lay flat or gained the negative emotions of others, so the male protagonist began to lay flat and live a life of salted fish to upgrade.