It is true that Xiang Yu sent 30,000 cavalry to Pengcheng and Bo Yang to threaten Han Xin, but his real intention was to deal with Peng Yue, so when the cavalry arrived at Bo Duong, 100,000 infantry led by Xiang Sheng Commanders also gathered in Tho Xuan. , then marched toward Thanh Phu, about 150 miles south of Tuy Duong.