Occupation: Vice Minister, Zhōnghuá Rénmín Gònghéguó Guójiā Ānquánbù, the Chinese Ministry of State Security (MSS). Leader of MSS Counterespionage.
Appearance: 57-year-old, handsome with soft, warm eyes, a square chin, and an infectious smile. Personable. Highly educated—genius-level smart.
Bio: Started as Director of the Hebei provincial state security, then he rapidly moved up the ranks. He gained favor within the current Chinese president’s faction and played a role in his power play to become president. The president appointed Sun to the national leadership positions with the MSS. A true believer in communist party politics. He despised traitors.
Situation: He was China's master of counterespionage. Once he has a suspicion, he would find not stop in his hunt for a traitor. He suspects Chen is providing the CIA with the names of MSS officials and other intelligence.
Vices: Overzealous to borderline ruthless. He is conflicted between his need to protect his reputation and status as a spy-catcher, removing Chen and taking over the MSS, and protecting the president and China. Anything goes to make all these happen. His drive is his downfall.