Here is his official description:
A strategist who serves Cao Cao. He proposed strategies in many great wars and municipal wars, and guided Cao Cao’s army to victory. He is a relative of Xun Yu.
there should be some terrible translation for these names. where they name everyone like steve, david, mary, or bethany or something. I like dynasty warriors but when asked who my favorite character is I say:
that guy with a ponytail and wears tights? and a tiny hat!!! I dont know his name but he seemed cool...