On Mount Emei, Bai Hong and Bao Guang are in the same frame.

Emei Mountain is located in the southwest of Sichuan Basin, 7 kilometers west of Emei Mountain and 37 kilometers east of Leshan City. It is one of the four famous Buddhist mountains in China. Emei Mountain-Leshan Giant Buddha, as a dual cultural and natural heritage, was listed on the World Heritage List by UNESCO on 1996. The highest peak, Wanfo Peak, is 3,099 meters above sea level. Jinding (3,079.3 meters), where Huazang Temple, a Buddhist holy place, is located, is the highest point of Emei Mountain tourism.

There is a rare "gap" in Jinding of Emei Mountain, which is full of autumn. According to the staff of Jinding, the weather in Jinding of Emei Mountain was fine, with clouds and mist floating in the air. Near the Jinding cableway, there appeared a large aperture as hollow as a mirror, which contained colorful Buddha's light. This spectacle lasted about 20 minutes.

Meteorologists said that this strange phenomenon was influenced by natural factors such as sunshine, topography and clouds. Buddha's light is formed by the reflection of sunlight after diffraction in clouds, and the formation of large aperture is similar to that of rainbow, so it is called Bai Hong. This phenomenon is called the co-occurrence of white, red and precious light, and it is also rare in Emei Mountain.