At the turn of the summer and autumn of 2010, an armed robbery of a gold store occurred in Tongzhou. The surveillance was blurred and the memory of the witnesses was confused. The captain of the serious crime team Shen Tianyi invited Zhou Yongyong, a portrait expert from the Physical Evidence Identification Center of the Ministry of Public Security, for support. But the case is far from over. The source of the guns pointed to a hidden gun trafficking line spanning multiple provinces, leading to several hidden "buyers." Shen Tianyi led the team to dig deeper into each case, and Zhou Yongyong provided portrait technical support along with the case. The two established a tacit understanding that transcended work trust while fighting side by side.
