Yun Yeyao's investigation results in the Huayuan community finally let the police know Fei Yong's whereabouts, and soon, the garbage transfer station behind Room 107 of Building 1 in the Huayuan Community was fully investigated, and the information seized by the police was not a star.

First of all, in a dilapidated shed in front of the large factory where the garbage was stacked at the garbage transfer station, traces of Fei Yong's residence were found, and compared with the DNA identified in Fei Fang's red hair, it was determined that Fei Yong himself was not wrong; Secondly, the hair and fingerprints of another person were also found in the shed, which were identified as completely consistent with Fei Gu himself, but Fei Gu and Fei Yong's DNA did not match, indicating that they were not biological father and son.

After determining that Fei Gu was Fei Yong's adopted son, the police extracted the transcripts of the current person in charge of the garbage transfer station and the owner of Room 107 of Building 1 in the Huayuan Community.

During this period, the current head of the garbage transfer station also provided a major piece of news, that is, his predecessor had a son who used to play with Feigu and often secretly provided Feigu food. This news is very important, Feigu is the kind of child who is very autistic because of life, and if he hadn't stayed together for many years, he wouldn't have had the kind of friend who could trust him completely.

The son of this former head is most likely X. And X is the only victim of Luoquewu whose identity is unknown to the police, and after the elimination method, Mo Haiyou can determine that the male corpse whose legs were cut off at the exit of the secret room on the second floor is X. Then, the DNA information of one of his relatives must be obtained to confirm whether X's identity is what the police suspected.

Upon receiving the news, the director immediately ordered a comprehensive investigation to find out if the former person in charge of the garbage transfer station had any living relatives, and fortunately, the current person in charge provided his name: Gong Lin'an, as well as their previous address. This eliminated a lot of difficulties for the police investigation, but the final result was not satisfactory, Gong Lin'an's previous address has changed owners, the two died as early as 2011, they have no brothers and sisters, and distant relatives have long lost contact.

Just when the police couldn't find Gong Lin'an's son, an old neighbor who had known Gong Lin'an for decades provided a special piece of information, he vaguely remembered that Gong Lin'an's wife had been unable to have children, and after the age of forty, the two of them secretly bought a child through an intermediary and named the child Gong Xiaoxu, except for a few familiar people, outsiders hardly knew about it.

When he told the secret to this old neighbor, Gong Lin'an said: Because the two of them are already quite old, and Gong Xiaoxu was quite pitiful when he bought it, so in order for him to have the opportunity to find his biological parents in the future, Gong Lin'an and his family decided to tell Gong Xiaoxu the truth before they died, and saved a strand of his infant hair to make a pendant as a token of future recognition, but where are they hiding this strand of hair? The neighbors don't know.

This clue is very important, to get this strand of hair, the police must investigate Gong Xiaoxu's current address, through the city's public security network line identity registration information search, a total of eight people named Gong Xiaoxu were investigated, excluding three of the women, the remaining five people The police visited and investigated one by one, and finally locked the person who lived in the fifth-floor apartment at No. 1008, Qianli Street, Nanmen Fuqianli Street, the city was Gong Lin'an's adopted son Gong Xiaoxu.

When the police arrived there, the neighbors testified that they hadn't seen Gong Xiaoxu for more than ten days, and that a man and a woman who often came to live with Gong Xiaoxu hadn't come over for a long time. Through the detailed description of the neighbor, the police preliminarily drew a sketch of the image of this man and a woman, and determined that these two people were Fei Gu and He Mina, which also made the speculation that Gong Xiaoxu was X preliminarily proven.

Next, everything is logical, the fifth-floor apartment at No. 1008 Fuqianli Street not only got the strand of hair saved by Gong Xiaoxu's parents, but also got a lot of fingerprints of Gong Xiaoxu, Fei Gu and He Mina, through DNA and fingerprint comparison, Mo Haiyou completely confirmed that Gong Xiaoxu was X who had never known his identity.

Since then, one of the two mysterious victims of the Roquewu murder has finally been revealed. The other person, the female corpse used to replace Jiang Xiaomei, has become the last unsolved mystery in the Luo Que House murder incident.