People visit Namtso Lake in Tibet, June 2, 2021. (Photo: China News Service/Chen Xiaoyuan)

Black-headed gulls have fun in the Namtso Lake in Tibet, June 2, 2021. (Photo: China News Service/Chen Xiaoyuan)

A black-headed gull soars over the Namtso Lake in Tibet, June 2, 2021. (Photo: China News Service/Chen Xiaoyuan)

People visit Namtso Lake in Tibet, June 2, 2021. (Photo: China News Service/Chen Xiaoyuan)