Sorry, This is How Things are Done on Jiyin Island

[Ruthless, no female lead, slow pace, detailed setting]

The protagonist possesses a superior spiritual root and is not a useless character; he will not use obvious cheat codes.

Born into poverty and destitute, Zhou Xuan learned to scheme, to be ruthless, to curry favor, and to survive in this quagmire of a world.

But success is one part effort and nine parts luck. Zhou Xuan was so lucky to encounter a celestial master who would take him as a disciple that he couldn't care less about anything else.

Even though this immortal master was shrouded in black smoke and clearly came from a legitimate sect, Zhou Xuan was like a moth drawn to a flame, disregarding everything.

The motto of the Extreme Yin Old Demon:

Going all in is a form of wisdom.

The world must be at fault, so why should I be at fault?

Oh no! A great terror is about to be unleashed! Quickly protect all the disciples in front of you!

Young man, put aside your ambitions!