The behaviour will undermine U.S. interests, foreign ministry spokeswoman Hua Chunying said at a regular briefing.

Global index providers MSCI Inc and FTSE Russell said they would cut three Chinese telecom companies from their benchmarks in response to a U.S. investment ban, crushing the share prices and widening the fallout from U.S. sanctions.

(Reporting by Cate Cadell; Writing by Beijing Newsroom; Editing by Christopher Cushing)