US President Donald Trump said that he will meet with his Chinese counterpart Xi Jinping soon to seal what he described as potentially “the biggest deal ever made”, following two days of trade negotiations in Washington, the Wall Street Journal reports.

“I think when President Xi and I meet, everything will be agreed to,” Trump said.

Both the president and US Trade Representative Robert Lighthizer, who is heading the US negotiating team, said there was substantial progress on key issues this week, including concessions by China to allow verification that it is upholding any commitments to reform.

No details of the meeting were made, but Chinese Vice Premier Liu He reportedly extended an invitation to Lighthizer to visit Beijing in February for the next round of talks.

Trump also doubled down on one of his administration’s key goals for the trade dispute – greater access to China’s huge, but protected, domestic markets.

“Looking for China to open their Markets not only to Financial Services, which they are now doing, but also to our Manufacturing, Farmers and other U.S. businesses and industries. Without this a deal would be unacceptable!” the president tweeted