Washington (CNN) President Donald Trump declared Monday he would participate in a "signing summit" with Chinese leader Xi Jinping as the world's two largest economies edged closer to a trade deal.

It was yet another optimistic signal by the American President that a long-standing trade impasse that has resulted in a series of tit-for-tat tariffs may finally be nearing a close as negotiators inched closer to a 90-day deadline of March 1.

"I told you last night -- there was a lovely dinner -- but I told you how well we did with our trade talks in China and it looks like they'll be coming back quickly again, and we're going to have another summit, we're going to have a signing summit, which is even better, so hopefully we can get that completed, but we're getting very, very close," Trump told the nation's governors at the White House.

In a tweet Sunday evening, Trump wrote he would delay an increase in tariffs on Chinese goods set to take effect at 12:01 a.m. on Saturday, citing "substantial progress" on top priority issues for the administration tied to intellectual property and technology transfers after a weekend of talks.

The US President also floated the prospect of a summit "to conclude an agreement" with China's Xi should progress continue.

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