Later , Yan successfully develops a marital relationship with Crystal and Yan becomes his enemy Ray 's son in - law .
Yan leads the Wah Fuk Gang to terrorize the Black Tiger Gang and rescues Crystal .
Later , Yan successfully develops a marital relationship with Crystal and Yan becomes Yan 's enemy Ray 's son in - law .
Yan leads the Wah Fuk Gang to terrorize the Black Tiger Gang and rescues Crystal .