Liu Feng transmigrates to the Zhenguan era of the Tang Dynasty in a parallel world, where he becomes a squad leader in the Crown Prince's Guard. He had planned to spend his days drinking, eating meat, and visiting brothels, but unexpectedly gets chosen to accompany Wang Xuance on a diplomatic mission to the Western Regions.
The entire delegation is wiped out. Bound to a Conqueror System, can he conquer an entire kingdom alone? That's not enough. Anyone who refuses to submit must be wiped out. His path to supremacy begins in earnest.
Whoever dares threaten Great Tang, no matter how far away, will be exterminated.
This has nothing to do with the Tang Dynasty... Are you just trying to ride its coattails?