The Trump administration imposed sanctions on the Chinese military on Thursday for buying fighter jets and missile systems from Russia, in breach of a sweeping US sanctions law punishing Moscow for meddling in the 2016 US election.
In Beijing, the Chinese government expressed anger and demanded the sanctions be withdrawn.
The US State Department said it would immediately impose sanctions on China's Equipment Development Department (EDD), the military branch responsible for weapons and equipment, and its director, Li Shangfu, for engaging in "significant transactions" with Rosoboronexport, Russia's main arms exporter.
The sanctions are related to China's purchase of 10 SU-35