Medical Examiner Dr. Qin: Blood Red Wedding

Two highly ceremonial wedding homicides are connected to a wedding murder from fifteen years ago. The highly similar deaths of the three brides puzzle Qin Ming and the others, but he finds out that the murders are the same, and this has become the breakthrough point of the three deaths.
(Source: Douban)
~~ Adapted from book 5 "Survivor" (幸存者) in the novel series "Medical Examiner Dr. Qin" (法医秦明) by Qin Ming (秦明).