Hong Kong (CNN) US President Donald Trump has threatened to slap tariffs on another $300 billion of Chinese exports to the United States if China's leader Xi Jinping doesn't meet him at the G20 in Japan.

There has been no public indication that the Chinese president intends to avoid Trump at the summit of world leaders in Osaka on June 28 and 29, where the pair are expected to discuss the raging trade war between their nations.

"I think he will go and I think we're scheduled to have a meeting. I think he'll go," Trump said in a phone interview with CNBC Monday. "I would be surprised if he didn't go. I think he's going. I haven't heard that he's not. We're expected to meet and if we don't that's fine and if we do that's fine."

But when asked if a failure by Xi to meet him at the summit would lead to tariffs being imposed on the last $300 billion of Chinese imports to the United States to have so-far escaped the trade war, Trump replied: "Yes it would."

On Tuesday, Chinese Foreign Ministry Spokesman Geng Shuang said that Beijing had noted recent US remarks on its expectations of a meeting between the two leaders.

Read More