BEIJING — Four boats capsized in a sudden storm at a tourist spot in southwestern China, killing 10 people, state media said Monday.

More than 80 people fell into a river when strong winds hit the scenic area in Guizhou province late Sunday afternoon, state broadcaster CCTV said.

On the upper reaches of the Wu River, a tributary of China’s longest river, the Yangtze, a sudden rain and hail storm caused the boats to capsize. State media shared a video showing a man performing CPR on another individual as one of the boats drifted upside down.

Initial reports said two tourist boats had capsized, but state media said on Monday that four boats were involved. The other two boats had no passengers, and the seven crew members were able to save themselves, CCTV said.

Guizhou’s mountains and rivers are a major tourism draw, and many Chinese were traveling during a five-day national holiday that ended Monday.

Chinese President Xi Jinping called for all-out efforts to find the missing and care for the injured, the official Xinhua News Agency said on Sunday. Seventy people were sent to a hospital, most with minor injuries.

Noting a recent series of fatal accidents, Xi underscored the importance of strengthening safety at tourist attractions, large public venues and residential communities, as well as for the rush of people returning at the end of major holidays.

CCTV said the capsized boats had a maximum capacity of about 40 people each and were not overloaded.

An eyewitness told state-owned Beijing News the waters were deep but that some people had managed to swim to safety. However, the storm had come suddenly and a thick mist obscured the surface of the river.