Silent Evidence of Crime

The evidence doesn't lie, but the people who create it do. Guo Shu, the son of the richest man in the county, perfectly meets all the elements of his mistress's murder case: motive, time, blood stains, and irrefutable evidence. The evidence was perfect, like a carefully prepared gift. When Li Liang tried to open this "gift", Suspicious aspects of the "suicide" of female college student Gao Xiaobing half a year ago have emerged. The police officer responsible for Gao Xiaobing's case was found to have died mysteriously in his car... Are these three cases a coincidence or a huge conspiracy?