Naruto System in One Piece - Chapter 529

A failed investor from 2017 got drunk and woke up in the 1980s. China is just opening up, and the economy is blooming. There is also the dissolution of the Soviet Union, the bursting of the Dot-com bubble and other financial crisis. He used his knowledge of the future and slowly build up his empire.

- Description from novelupdates

Emperor Hegemony, Emperor Might, Saint Sage, Supreme Realm cultivators too! A youth who was determined to become a peerless powerhouse had his dantian destroyed due to an accident. Was that a disappointment, or a desire to become stronger? The youth, Ling Xiao, had unintentionally obtained a cauldron, a sword, and watched as Ling Xiao completed the legends that no one had broken since ancient times. He had done everything he could to surpass the heavens and reach the supreme peak! Holy Emperor's fans 423840230!

This is the tale of an earthling, who transmigrated as a dying third-rate god but somehow rose through the ranks, gaining followers and eventually causing the Fourth Great Apocalypse.