Volume on the Shanghai measure was 29 percent lower than the 30-day average at this time of the day, suggesting there was little conviction in Tuesday’s rebound. Defensive stocks led gains, with consumer discretionary and health-care stocks among sectors rising most on the CSI 300 Index.

“Markets are shaky right now,” said Yu Yingbo, investment director at Shenzhen Qianhai United Fortune Fund Management Co. “The uncertainties are still too many. Trump has taken advantage of the one factor that the Chinese government has little control over.”

Technology shares, which had become a trade-war proxy, particularly suffered in China on Monday. Optimism that China and the U.S. would reach a deal on trade helped make Shanghai equities the hottest in the world this year until last week. The benchmark has failed to hold above a number of key support levels as popular trades unraveled amid lackluster corporate earnings and concern Beijing is easing back on stimulus.

State-backed media has sought to downplay the rout: there was barely any mention of the stock tumble on Tuesday. An article published by the China Securities Journal, one of the country’s most widely circulated financial dailies, argued that the bull market will resume. Only one Chinese-language newspaper featured escalating trade tensions on its front page.

The Shanghai Composite traded at 2,929, below the key 3,000 level that acted as a support last month. PetroChina Co. and Industrial and Commercial Bank of China Ltd. — which saw sharp moves in late trading Monday amid speculation Chinese state funds were stepping in to support the market — were among the biggest drags in Shanghai. Shenzhen stocks fared better, with the benchmark gaining 1.9 percent.

Shares in Hong Kong also edged higher, with the Hang Seng China Enterprises Index advancing 0.4 percent.

There is at least 30 percent chance that the U.S. and China will fail to reach a deal to end the trade war, Jefferies Financial Group Inc. analysts wrote in a note dated Monday. The danger is that both sides may believe their negotiating position has strengthened and may be less willing to compromise, they wrote.

“The market won’t be trading with a clear direction in the near term,” said Zhang Gang, a Shanghai-based strategist with Central China Securities Co. “There will definitely be more twists and turns along the way before both parties reach a trade deal that everyone wants to see. The market could still be impacted in the short term.”