Solar halo in China
© Chen Dengke/GuangmingNingbo City, China's Zhejiang Province
Solar halo is an atmospheric optical phenomenon caused by refraction of sunlight by tiny ice crystals in clouds.

In folk culture, people believe if a solar halo view appears in day, rain will come at night. So we can regard solar halo as a basis of the weather changes.

Solar halo over China
© Chen Dengke/GuangmingTaizhou, China's Zhejiang Province
Solar halo over China
© Shi Yalei/GuangmingHuangshan City, China's Anhui Province
Solar Halo over China
© Lin Baocong/GuangmingTaizhou City, China's Zhejiang Province
Solar halo over China
© Shi Yalei/GuangmingHuangshan City, China's Anhui Province