September 9th is the Double Ninth Festival. The Double Ninth Festival is a traditional Chinese festival that falls on the ninth day of the ninth lunar month every year. The number "Nine" is a yang number in the "Book of Changes", and the two yang numbers "Nine Nine" overlap each other, so it is called "Double Ninth Festival".

Drinking chrysanthemum wine during the Double Ninth Festival is a traditional Chinese custom. Chrysanthemum wine was regarded as an "auspicious wine" that must be drunk during the Double Ninth Festival in ancient times to ward off disasters and pray for blessings. Chrysanthemum wine is medicinal wine with a slightly bitter taste. After drinking it, it can make people's eyesight clear and it also has the auspicious meaning of dispelling disasters and praying for blessings.

Autumn sunbathing:

The Double Ninth Festival is the best time to enjoy autumn. There are still some mountainous villages in southern China that retain the characteristics of "autumn sunbathing". Going to the countryside to appreciate folk customs and watch the autumn sun has become a fashion in rural tourism. "Autumn sunbathing" is a typical agricultural custom with strong regional characteristics. Villagers living in mountainous areas in Hunan, Guangxi, Anhui, Jiangxi, etc.

Due to the complex terrain, there is very little flat land in the village, so they have to use the front and back of the house and the roof of their own window sill to rack and hang crops to dry. Over time, it has evolved into a traditional agricultural custom. This special lifestyle and scene of villagers drying crops has gradually become a creative material for painters and photographers, and has created the poetic name "autumn sun".