Under the siege and assault of so many different parties, how could the Cheng Clan resist? They were instantly wiped out!
Perhaps there may be a few who have fortunately escaped, but with Ling Han's current status in Da Yuan City, the survivors of the Cheng Clan would be ultimately detested by all. They'd have to keep running and hiding, or they'd definitely be apprehended and delivered straight to the Ling Clan.
...Who did not want to befriend Ling Han?