1, the Double Ninth Festival, which originated in the Warring States Period, was originally a festive day. The ancients divided everything in heaven and earth into Yin and Yang, with Yin representing darkness and Yang representing light and vitality. Odd numbers are positive and even numbers are negative. Nine is an odd number, so it belongs to Yang. On the ninth day of September, the sun and the moon meet, and the two yang are heavy, so it is called "Chongyang".

2. China people have always had special feelings for the Double Ninth Festival, and there are many excellent works in Tang poetry and Song poetry to congratulate the Double Ninth Festival and chant chrysanthemums. For example, the Tang Dynasty poet Wang Wei's "Living in the Mountain and Thinking of Shandong Brothers" said: "Being a stranger in a foreign land, I miss my relatives twice every festive season. I know from a distance where my brother climbed, and there is one person missing from the dogwood. " Li Bai's "September 10th Event": "I climbed the mountain yesterday, and I gave it to you today. Chrysanthemum is too bitter, suffering from these two Chongyang. "

3. Double Ninth Festival in September, also known as Double Ninth Festival or Festival for the Elderly. There are many activities in the Double Ninth Festival, such as climbing mountains, enjoying chrysanthemums, drinking chrysanthemum wine, flying kites, eating double ninth cake, inserting dogwood and so on.