BEIJING: Chinainfo-icon warned on Sunday that it was ready to hit back if the United Statesinfo-icon damaged its economic interests, fuelling fears of a trade warinfo-icon after President Donald Trumpinfo-icon unveiled tariffs on steel and aluminium.

Trump's announcement on Thursday sparked a flurry of counter-threats from other nations. But Washington's main trade rival had avoided any overt warnings of potential retaliation until now.

"China doesn't want a trade war with the United States," Zhang Yesui, spokesman for the National People's Congress, told a news conference on Sunday, the eve of the parliament's annual session.

"But if the USinfo-icon takes actions that hurt Chinese interests, China will not sit idly by," Zhang said. An official English-language interpreter added the phrase, "and will take necessary measures".