On September 20, Guangzhou netizens released a video in which a rare double-circle rainbow appeared in the sky, which formed a complete circle when viewed from a high altitude, reflecting the Guangzhou Tower.

The Hauni double display only appears in the morning and evening when the water vapor is abundant after the rain and the sunlight incidence angle is about 42° (when Ni is about 52°).

(Video source Fengyunhui Guyan editor Gao Yuhui)

Editor in charge: [Liu Xian]