During Trump's first term, tariffs on China were a big win for Vietnam, especially in cities like Haiphong. Now the country's future isn't so clear.

Xi Jinping is in Southeast Asia to build bonds with countries that also face U.S. tariffs and have come under pressure from Washington to curb the transshipment of Chinese goods.

China's President Xi Jinping on Monday called for stronger ties with Vietnam on trade and supply chains amid disruptions caused by U.S. tariffs, as he kicked off a three-nation trip to Southeast Asia in the Vietnamese capital of Hanoi.