In a remote box on the third floor of a private clubhouse in Haicang District, Xiamen, five men sat on the sofa and looked proud.

A middle-aged man hung up the phone and said in horror, "Li Changshun was mad, blocking the police and special police outside the wharf and not saying anything. Now he even sent me a message through the Yao Bureau. If we don't withdraw the police, he will follow me endlessly. The first one to be buried is Guo Wenyao, who I sent to, and then I will come to settle the accounts with everyone involved. They'll all suffer."

"This is a naked threat." A young...