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Solar halo glows in southwestern city

Solar halo glows in southwestern city\

A solar halo appears in the sky over Zigong City, Southwest China’s Sichuan Province, May 16, 2017. A halo is an optical phenomenon produced by ice crystals that appear as colored or white arcs and spots in the sky. (Photo: China News Service/Tu Guangmeng)

[ Editor: Xueying ]

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