When it comes to Yuntong, what is the allusion to the three Qi royal seals hanging on the waist?

This is a sentence (half a sentence) from an article written by Lu Mengzheng, the prime minister in the early Northern Song Dynasty. This refers to Han Xin. He was humiliated in the crotch but ended up with three seals of the King of Qi hanging on his waist (one of the King of Qi was his fiefdom, and the other two were the seals captured by the Qi princes when he defeated the late Qin Dynasty. This is just a reference to his achievements). Use this to sue Han Xin for his reputation