Donald Trump plans to meet with China’s top economic envoy at the White House on Thursday, said the president’s senior economic adviser, who described the negotiations to ease the U.S-China trade conflict as “difficult.”

Trump is “involved in every decision,” Larry Kudlow, director of the National Economic Council, told reporters at the White House on Thursday. “We are going to have serious talks dealing with the difficult trade situation that needs to be fixed.”

The sides are expected to exchange new proposals during the top-level talks on Thursday and Friday in Washington, said Kudlow. Chinese Vice Premier Liu He is also scheduled to meet with Treasury Secretary Steven Mnuchin, Commerce Secretary Wilbur Ross and U.S. Trade Representative Robert Lighthizer, according to the White House.

Mnuchin led a trip to Beijing earlier this month for talks, but they failed to make progress.

“I am very hopeful,” said Kudlow. He repeated that Ross is reviewing U.S. penalties placed on Chinese’s ZTE Corp. last month for violating sanctions law -- a key demand from China in the trade talks.