U.S. President Donald Trump said Thursday he will meet with Chinese President Xi Jinping soon to try to seal a comprehensive trade deal, with Trump and his top trade negotiator both citing substantial progress in two days of high-level talks.

Trump, speaking at the White House during a meeting with Chinese Vice Premier Liu He, said he is optimistic that the world's two largest economies can reach "the biggest deal ever made."

The Chinese trade delegation said in a statement that the two days of high-level talks made "important progress," China's official Xinhua News Agency reported.