A common redshank forages at Lhalu wetland in Lhasa, southwest China`s Tibet Autonomous Region, May 5, 2020. (Xinhua/Zhang Rufeng)

People enjoy leisure time near the Lhalu wetland in Lhasa, southwest China`s Tibet Autonomous Region, May 5, 2020. (Xinhua/Zhang Rufeng)

Seagulls and wild ducks are seen at the Lhalu wetland in Lhasa, southwest China`s Tibet Autonomous Region, May 5, 2020. (Xinhua/Zhang Rufeng)

Photo taken on May 5, 2020 shows a solar halo over the Lhalu wetland in Lhasa, southwest China`s Tibet Autonomous Region. (Xinhua/Zhang Rufeng)