How did Sun Haiyang find it?

Sun Haiyang found these bones while dredging the river.

The plot of Who's the Murderer always thought that the murderer of serial murder was Shen Haiyang who had been missing for many years. Because Shen Haiyang disappeared after the last serial murder, and the information on the scene was highly consistent with the murderer, the police always thought that Shen Haiyang was the murderer, and even Shen Haiyang's daughter was misled.

Until a white bone was salvaged from the river and compared in the information base. After the skull was reset, I learned that Shen Haiyang had been dead for more than ten years, which may have been killed by the murderer of a serial murder case.

It was later confirmed that Hu Shanquan was the murderer of Shen Haiyang. When Hu Shanquan killed Xia Jinlan, he was discovered by Shen Haiyang. First of all, he killed Shen Haiyang because he took Shen Yu as his daughter. He threw the body into the river and never found it.

Hu Shanquan has been pretending to be Shen Haiyang, making Shen Yu think that his father is still alive and misleading Shen Haiyang as a serial killer, which can really ruin Shen Yu's life.