|Full name:||Doctor Tsang|
|Main affiliation:||18K Triad|
Four Finger Wu
Doctor Tsang is a doctor and a serial killer involved in organ harvesting.
Doctor Tsang's doings caught the attention of the Hong Kong Police Department. Wei Shen was sent by Inspector Jane Teng to investigate three new bodies of Sun On Yee members, which were found under the Aberdeen Bridge. One of the bodies was of Wei's friend, and Water Street Gang member, Vincent. After inspecting the bodies, Wei deduced that they were part of an organ harvesting scandal.
Doctor Tsang kidnapped Calvin, another one of Wei's friends, apparently in an attempt to kill him in a similar fashion. However, Wei was able to stop Doctor Tsang and bring him to justice.
Tsang was sentenced to 10-20 years in maximum security prison, but would likely serve much less time as he only killed Triad members.
- It is most likely that Tsang was preyed upon by Sun On Yee prisoners while he was in prison due to his crimes against them.