Beijing mum on Trump-Xi meeting at G20 summit

China on Tuesday did not confirm a planned face-to-face meeting between President Xi Jinping and his American counterpart Donald Trump, after the US leader threatened new tariffs against Beijing amid an escalating trade war.

Trump said a meeting with Xi has been "scheduled" during the G20 summit in Japan later this month, and that he expected the Chinese leader to attend.

"We have noticed that the US has repeatedly publicly expressed its expectation that the Chinese and US heads of state will meet during the G20 summit," foreign ministry spokesman Geng Shuang told a regular briefing.

"If there is any news in this regard, we will release it in due time." A Trump-Xi meeting would mark a turning point in the bruising trade dispute between the world's two biggest economies, which has spooked markets worldwide and sparked worries about the global economy.

Negotiations to resolve the dispute stalled last month after Washington increased tariffs on $200 billion worth of Chinese imports, sparking retaliation from Beijing.

Trump told CNBC on Monday that he would be "surprised" if Xi did not attend the meeting.

"I think he's going, I haven't heard that he's not," the US president told the channel.

Asked if a no-show by Xi would lead to tariffs kicking in on a further $300 billion in Chinese imports, Trump said: "Yes it would."