United States and China they must “genuinely commit themselves” to resolving their differences over security and free trade issues, said JPMorgan Chairman and CEO Jamie Dimon.

Dimon’s comments at a banking conference in Shanghai hosted by JP Morgan came amid a sharp deterioration in U.S.-China relations in recent years.

“You won’t fix anything if you just sit on the other side of the Pacific Ocean and yell at each other. So I hope we have a real commitment,” J. Dimon said when asked about the China-US disconnect at the three-day JPMorgan Global China Summit in Shanghai.

Dimon noted that the differences between the two countries on issues of security and free and fair trade are “resolvable.”

The US bank has strengthened its presence in China in recent years through newly acquired licenses or increased stakes covering securities, funds and futures contracts.

But at the same time, he warned that “uncertainty” about Chinese government policy could be a blow to investor confidence as new data showed that the recovery in the world’s second-largest economy was slowing.

“If there is more uncertainty, partly caused by the Chinese government … it will not just change foreign direct investment,” he said in an interview with Bloomberg TV, answering questions about China’s Covid-19 policy and suppression of the technology sector. “It will change the people here, their own confidence.”