Silent Signal: The Serious Case Unit Six

October 1995, Sunxi Village, Dong'an City. A joyous wedding is shattered by gunfire. Four masked, armed robbers storm the banquet, killing in public, looting, and abducting a five- or six-year-old child before vanishing into the night. Deputy Criminal Investigation Unit leader Zheng Yimin leads the manhunt, and a brief breakthrough comes at an old barbershop. Zeng Keqiang, newly arrived from the provincial department, accidentally witnesses the robbers fencing their loot, triggering a swift raid. Two criminals are captured; the remaining four flee into the village. To find the hostage, detective Liu Hua goes undercover alone, but steps on a booby trap set by the robbers and dies a hero's death. Grief crushes the team. Ji Jie cuts her long hair, grows up overnight, and casts a lingering suspicion toward the newly arrived Zeng Keqiang. Yet no one knows that before his death, Liu Hua had already sensed a vast dark web—the Zhao Group, deeply rooted locally, with surging undercurrents and countless suspicious points. On the night the transfer order reaches Dong'an, the group's young heir Zhao Bin proactively extends an olive branch of corruption. In the interrogation room, captured robber Zhang Haiqiang is unafraid, a certainty hidden in his eyes. A bloody wedding robbery, a martyr's life, a deadly trap set by dark forces. — Description from novelcodex.org