The United States and 22 other countries at the United Nations pushed China on Tuesday to stop detaining ethnic Uighurs and other Muslims, prompting China's U.N. envoy to warn it was not "helpful" for trade talks between Beijing and Washington.

China has been widely condemned for setting up complexes in remote Xinjiang that it describes as "vocational training centers" to stamp out extremism and give people new skills. The United Nations says at least 1 million ethnic Uighurs and other Muslims have been detained.

"It's hard to imagine that on the one hand you are trying to seek to have a trade deal, on the other hand you are making use of any issues, especially human rights issues, to blame the others," China's U.N. Ambassador Zhang Jun told reporters.