Beneath the Undertow episode 2

In the once-vibrant state-owned Asahi Factory, the body of a female college student with a severed foot is accidentally found discarded in an abandoned sewage tank. The deceased is Shen Xiao Zhou, the daughter of a factory worker. Criminal police team leader Lian Hai Ping is ordered to investigate the case. Shi Qiang Feng, a young criminal police officer who reported the case on the first day, gets accidentally assigned to Lian Hai Ping's investigation team. The unexpected case and investigation team starts a fateful journey between the two to hunt down the murderer. At the same time, this case also brings back an unknown past deep in Lian Hai Ping's memory, and his new partner, Shi Qiang Feng, seems to have his own secrets. During the investigation, Lian Hai Ping finds out a mysterious force is behind the manipulation of the whole case. A partner with a mysterious life experience, a first love who died unexpectedly, a deep-seated entrepreneur, an old factory area that is running out of business... This case connects the truth between the past and the future. The fog seems to be bright, and the undercurrent is already surging. (Source: Chinese = leixuesong.com || Translation = MyDramaList)