May rain knot and the first mirror-bending spirit

The third and fourth volumes introduce: Jie and Wu Che follow Rico to Muliang Station to find the spirit of the imperial mirror. On the rooftop of the department store next to the station, Wu Che and Rico subdued the killers codenamed "copycat" and "Wright Flyer" and the super-college climber Huo Dengjian who targeted Rico. Du Ruo thus admitted that his true identity was the Royal Mirror.

After the case of "Takeda haunted house" was solved, I was worried about Twinkie's attitude, so I went to Fogeki's house to investigate. Fog cut has been avoiding talking about his whereabouts after the Norman hotel case and refused to go home to live in the dormitory.

In Wu Xie's home, Jie was almost killed by the new immortal emperor and rescued by Wu Xie's father Kirigiri Jin. He told Gitzo Xiandi and Wu Che about his situation, and told Wu Che to keep it a secret.

Finally, in the case that Yujingling has solved half of the six cases, Ma Yujie and Wu Qizi solved the case of "Wutian haunted house" and solved the remaining five cases together with the three detectives they met in the case of "Wutian haunted house", thus completing the challenge of the dragon under the moon.