US President Donald Trump is optimistic about the interim results of top-level trade negotiations with Chinese officials in Washington but said that the final deal will not be reached until he meets with Chinese President Xi Jinping. On Wednesday, the United States and China launched a key round of talks aimed at overcoming differences over intellectual property and technology transfer and easing a multi-month wage war. Trump is due to meet with Chinese Vice Premier Liu He at the White House.

"China's leading resellers are meeting with our representatives in the United States. Meetings are going well with good intentions on both sides. But there will be no final deal until my friend President Xi and I meet in the near future to discuss and agree on some long-standing and more complex issues," Trump wrote on Twitter.

Trump said the negotiators are working to complete the deal before March 1, the deadline agreed by both parties.