China's Qinghai Lake melts
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Qinghai Lake in northwest China starts to melt in mid-April. /Xinhua Photo

Qinghai Lake in northwest China starts to melt in mid-April. /Xinhua Photo

It enters its “frozen period” in every mid-December and will be completely thawed by mid-April next year. /Xinhua Photo

It enters its “frozen period” in every mid-December and will be completely thawed by mid-April next year. /Xinhua Photo

Brown-headed gulls come to the lake. /Xinhua Photo

Brown-headed gulls come to the lake. /Xinhua Photo