US President Donald Trump announced on Thursday he will meet with China's top trade envoy as the two sides pursue fraught negotiations that this week appeared headed for a dead end.In a tweet, Trump said he will meet on Friday with Vice Premier Liu He, who returned to the negotiating table on Thursday amid a blitz of aggressive US maneuvers with hopes for a grand bargain between the economic powers this week near zero.Trump's announcement sent US stocks surging, calming fears after an overnight news report said the Chinese side could leave early given the slim progress in preliminary talks. After days of gyrations, however, Wall Street was still in the red for the week toward 15:00 GMT.But the atmosphere for the high-stakes parley was shifting rapidly. Liu smiled broadly as he was greeted by US Trade Representative Robert Lighthizer and Treasury Secretary Steven Mnuchin on Thursday morning as they resumed senior-level negotiations.US duties on $250bn in Chinese imports are due to rise in five days and there was no hiding the sharp deterioration in relations this week.Trump - who has taken the global economy on a white-knuckle ride since launching multi-pronged trade offensives with China, Europe and other allies last year - reiterated on Thursday that the outcome was down to him."Big day of negotiations with China. They want to make a deal but do I?" he said on Twitter."I meet with the vice premier tomorrow at the White House." Big day of negotiations with China. They want to make a deal, but do I? I meet with the Vice Premier tomorrow at The White House.— Donald J. Trump (@realDonaldTrump) October 10, 2019 Just since Monday, Washington has slapped visa restrictions on senior Chinese officials and blacklisted more than two dozen Chinese firms, accusing them of persecuting ethnic Muslims in China's western Xinjiang region.The measures have outraged Beijing and in the process penalised major players in the artificial intelligence sector, in which the US and China are intense rivals.But Trump's attitude toward the process is subject to sudden change, given the churning pressures competing for his attention.He is as usual engulfed in turmoil, facing Democrats' intensifying impeachment probe and stinging criticism from Republicans for effectively allowing a Turkish assault on US-allied Kurds by pulling American forces away from the border in northeast Syria.Markets over the prior 24 hours had pinned their hopes on media reports that Beijing will propose a partial trade deal to prevent further escalation.China is willing to bump up purchases of US farm exports and make other concessions but will stop short of addressing Trump's core grievances, according to reports from Bloomberg and The Financial Times.In return, Beijing would expect a pause on planned increases in US import tariffs, which are currently scheduled to increase in waves through December.Earlier in the week, firebrand White House trade adviser Peter Navarro told NPR that Trump was uninterested in half measures, showing "steely resolve" instead.'More and more friction'"It's either a big deal or no deal," he said, adding that any attempt to reach an incremental bargain would be a "miscalculation by China".Washington accuses China of attempting to dominate global industry through massive state intervention in markets, theft of intellectual property, hacking and subsidies, accusations shared by Europe and Japan.But Clete Willems, a former Trump trade advisor, said on Wednesday a partial deal could be the president's best move."I don't think the administration should be afraid of a partial deal," he told CNBC, adding that a bargain that came with some structural reforms to China's economy could leave Trump with enough leverage to pursue more reforms down the road.China's purchases of US soybeans jumped in September after stagnating during the summer. But warning signs for the global economy have blared ever louder in recent weeks, however, increasing the pressure on both sides to reach a deal.US central bankers believe the trade war is raising the chances the United States could slip into recession."We all know the next round of tariffs is going to hurt the United States as much or more than China," Wendy Cutler, vice president of the Asia Society Policy Institute, told AFP."I think neither side will admit it but I think they're both under pressure to find a way to forestall the next set of tariff increases," she said. "Every month that these trade talks continue, there's more and more friction in the relationship."