Rebirth 1980: Leave No Unsolved Cases Behind

[Criminal investigation + rebirth + reasoning + detective work + 80s + no heroine] In his previous life, he was a detective for half of his life, chasing the murderer all his life, and died in the line of duty out of hatred. Once reborn, he returned to the grassroots police station in Dongguan in 1980. No surveillance, no high technology, and clues are scarce. With a lifetime of criminal investigation experience, he has delved deeply into the countryside and carefully investigated for clues. Corpses floating in the deserted river, fake murder cases, unsolved cases... All the mysteries that could not be solved back then, in this life, all the disguises have been torn apart. Injustice must be redressed, and the real culprit must be caught. In the 1980s, start from scratch and hunt down all the fish that slip through the net. As a police officer in this life, no one will be spared if there is an unsolved case!