A solar halo occurs over the sky in Nanjing, capital of east China's Jiangsu Province, April 23, 2014. (Xinhua/Sun Can)
A solar halo occurs over the sky in Nanjing, capital of east China's Jiangsu Province, April 23, 2014. (Xinhua/Sun Can)
A solar halo occurs over the sky in Nanjing, capital of east China's Jiangsu Province, April 23, 2014. (Xinhua/Sun Can)
A solar halo occurs over the sky in Nanjing, capital of east China's Jiangsu Province, April 23, 2014. (Xinhua/Sun Can)