A drone picture taken on March 24, 2020, shows snow scenery at Yajiang Valley, Tibet autonomous region. A snowfall laid over Lhasa city and its surrounding area yesterday, and banks along the Yarlung Zangbo River were enveloped with a silver covering, shimmering under the sun. [Photo/Xinhua]

A drone picture taken on March 24, 2020, shows snow scenery at Yajiang Valley, Tibet autonomous region. A snowfall laid over Lhasa city and its surrounding area yesterday, and banks along the Yarlung Zangbo River were enveloped with a silver covering, shimmering under the sun. [Photo/Xinhua]

A drone picture taken on March 24, 2020, shows snow scenery at Yajiang Valley, Tibet autonomous region. A snowfall laid over Lhasa city and its surrounding area yesterday, and banks along the Yarlung Zangbo River were enveloped with a silver covering, shimmering under the sun. [Photo/Xinhua]

A drone picture taken on March 24, 2020, shows snow scenery at Yajiang Valley, Tibet autonomous region. A snowfall laid over Lhasa city and its surrounding area yesterday, and banks along the Yarlung Zangbo River were enveloped with a silver covering, shimmering under the sun. [Photo/Xinhua]

A drone picture taken on March 24, 2020, shows snow scenery at Yajiang Valley, Tibet autonomous region. A snowfall laid over Lhasa city and its surrounding area yesterday, and banks along the Yarlung Zangbo River were enveloped with a silver covering, shimmering under the sun. [Photo/Xinhua]

A drone picture taken on March 24, 2020, shows snow scenery at Yajiang Valley, Tibet autonomous region. A snowfall laid over Lhasa city and its surrounding area yesterday, and banks along the Yarlung Zangbo River were enveloped with a silver covering, shimmering under the sun. [Photo/Xinhua]