Cheng Yang went to the front of the palace alone to find Yu Qiu to ask about the escort of the emperor's grain that year, and told Yu Qiu that he would definitely investigate to the end. Jun Wujiu and others went to the case library to steal the file, Ouyang Chuchu and Su Wenyue deliberately caused trouble and led the guards away, Jun Wujiu sneaked into the case library to search for information, accidentally found the file of master Yue Hongzhi, and learned about the case and Yue Hong He firmly vowed to investigate the case and find out the truth of the mystery of Master's disappearance. Ouyang Chuchu found Uncle Li's confession in Ouyang Dingxian's room, Jun Wu Jiu contacted his master Yue Hongzhi and told Ouyang Chuchu to keep quiet, but he already had a lot of doubts about Ouyang Dingxian. Jun Wu Jiu and Cheng Yang followed Yu Qiu and found that he had a close relationship with Jin Se, so they persuaded Jin Se to help.