View of Yamzho Yumco lake in Shannan, Tibet

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Photo taken on July 29, 2020 shows a view of the Yamzho Yumco lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

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Photo taken on July 29, 2020 shows a view of the Yamzho Yumco lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

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A rainbow is seen above Yamzho Yumco lake in Shannan, southwest China's Tibet Autonomous Region, July 29, 2020. (Xinhua/Zhang Rufeng)

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Photo taken on July 29, 2020 shows a view of the Yamzho Yumco lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

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A rainbow is seen above Yamzho Yumco lake in Shannan, southwest China's Tibet Autonomous Region, July 29, 2020. (Xinhua/Zhang Rufeng)