Who Is a Serious Person Who Does Not Cultivate Immortality?

Chu Nan, who was out for an internship, died unexpectedly and traveled to another world with his system soul of Krypton Life! After waking up, he was stuck in a quagmire. He was a wolf in front and a tiger in the back. He had no idea what to do. How would he solve the many difficulties? This world is full of good players who come and go, so how can he gain a foothold with mediocre strength? Evil people stand in the way, people's hearts are sinister, society is complex, and there are all these weird and bizarre cases. How should he solve them?