China said Friday it will impose tit-for-tat measures on US institutions and individuals who "behave badly" on Xinjiang-related issues after Washington slapped sanctions on Chinese officials over a crackdown on Uighurs and other Turkic Muslims in the region. "The US actions seriously interfere in China's internal affairs, seriously violate the basic norms of international relations, and seriously damage China-US relations," foreign ministry spokesman Zhao Lijian said in a briefing, without giving details about the "reciprocal measures". bys-lth/lxc/rma