The People's Republic of China (China or PRC, for short), with over 1.3 billion people, is the largest country (by population) in the world. It is located in East Asia.
A woman named Nhadra Udaya contacts Demetri Noh from Hong Kong to tell him that she read about his future death in an intelligence briefing. It is unknown whether she is Chinese intelligence. ("White to Play") ("137 Sekunden")
During the Global Blackout, it was nighttime and most people in China were asleep. Consequently, China only suffered "fatalities of less than half a percent", according to CIA Director Keller. ("Gimme Some Truth")
Director Keller testified before the Senate Intelligence Committee, chaired by Senator Clemente, that the low number of casualties suffered by China leads the CIA to believe that China was responsible for the Global Blackout. ("Gimme Some Truth")
Assassins of East Asian ethnicity attack the FBI, including Mark Benford, Demetri Noh, Stanford Wedeck, Agent Vreede, and Janis Hawk. It is unknown whether those assassins were Chinese. ("Gimme Some Truth")