Introduction to Gale Square: "The Song of Gale", after Liu Bang became emperor, in 195 BC, he sent troops to the east to quell the rebellion of Huainan King Yingbu (also called Yingbu). On his way back, he passed through Peixian County. He invited his old friends and brothers from his hometown to have a drink together. At the banquet, he sang this wind song, expressing his political ambitions and his worries about national affairs.