A new city in Genshin Impact, Celestial technology, Anti-Entropy industry, and Honkai ruins.
Summoning the Fourth Calamity into Genshin Impact, he builds Jade Dragon City on the continent of Teyvat, where the cannon's muzzle is the only truth.
Influencing the Fourth Calamity in Honkai, he builds Jade Dragon City in the real world, jointly founded by Celestia and Anti-Entropy.
Jean: "Mr. Yi Pingzhi, could you sell Mondstadt a few more cannons from Jade Dragon City?"
Ningguang: "Mr. Yi Pingzhi, would you consider trading your energy technology for all the Mora in Liyue Harbor, plus one Keqing?"
Tartaglia: "Hahaha! We're friends, so cut me a little slack, will you?"
Rex Lapis: "We're all 2.1 billion. How about being friends?"
P.S. This is an overpowered protagonist story.