Unsolved Case? Can I Call Him?

[Case Solving·Criminal Investigation Reasoning] + [Time and Space Call] + [Father and Son Hunting the Murderer] + [New Theme] Detective Di Zheng, who was about to be fired due to the investigation of a case, accidentally discovered that his walkie-talkie began to contact his father 20 years ago. It seems that a certain bond between father and son has opened up a dialogue that spans time and space. The [Heavy Rain Murderer] occurs every year during the rainy season. The criminals have a strong sense of counter-detection and have been unsolved for many years? It doesn't matter! The 2026 case record records that he committed the first crime on Shanhai Road. Di Zheng: Please trouble my dad from 20 years ago and go stay in advance! Help me get some live leads! On the Far South Island, a murderous curse that spans decades? It doesn't matter! Di Zheng: Dad from 20 years ago, please investigate the problems back then! Hidden ancient village, corpse murder curse? Di Zheng: Come on, Dad! ... In this way, relying on time and space communication, Di Zheng can always grasp more clues than others, solve the unresolved and major cases that have been pending for many years one by one, and step by step move towards the top! And his father, with the help of his future son, started a different reversal in his life...