Lin Fan led his army to Ning, and after entering the city in a low-key manner, he discovered that the Hongguang regime was in chaos. He abandoned official falsehoods, asked hundreds of officials for Jiangnan's three-year account books, and used accounting experts in the live broadcast room to see through the serious deficiencies and alterations in the accounts. Lin Fan questioned Jiangning Tax Supervisor Cai in public and specifically gave him three days to reply in order to lure the snake out of its hole. This move made Sun Chuanting realize that the emperor had become calm and sophisticated. During the surveillance period, Cai frequently contacted Jiangnan powerful people and asked for help from Ma Shiying's gang members. His secret message for help was intercepted by someone sent by Lin Fan. After thoroughly understanding the interest network behind Cai, Lin Fan immediately ordered the closure of the network and liquidation.