A Lao fisherman fishes in the Mekong River near Vientiane, Laos, on March 10, 2020. (Photo by Kaikeo Saiyasane/Xinhua)

A fisherman repaires his net beside the Mekong River near Vientiane, Laos, on March 10, 2020. (Photo by Kaikeo Saiyasane/Xinhua)

Fishermen chat beside the Mekong River near Vientiane, Laos, on March 10, 2020. (Photo by Kaikeo Saiyasane/Xinhua)

A Lao fisherman casts a fishing net beside the Mekong River near Vientiane, Laos, on March 10, 2020. (Photo by Kaikeo Saiyasane/Xinhua)

A Lao fisherman fishes in the Mekong River near Vientiane, Laos, on March 10, 2020. (Photo by Kaikeo Saiyasane/Xinhua)

A Lao fisherman is seen on his boat in the Mekong River near Vientiane, Laos, on March 10, 2020. (Photo by Kaikeo Saiyasane/Xinhua)