Double Ninth Festival, a traditional festival in China, falls on the ninth day of the ninth lunar month every year, which is a traditional folk festival in China. The Double Ninth Festival originated from the worship of celestial phenomena, and evolved from the harvest sacrifice in autumn and season in ancient times. The number of "Nine" is a positive number in the Book of Changes, and the two positive numbers of "Nine Nine" are heavy, so it is called "Chongyang"; It is also called "double ninth" because the day and the month all meet nine.

99 returns to the truth, and one yuan begins. The ancients thought that 99 Double Ninth Festival was an auspicious day. In ancient times, there were folk customs such as climbing to pray for blessings, enjoying chrysanthemums in autumn, wearing dogwood, worshiping ancestors and drinking and praying for longevity. Up to now, it has added the connotation of respecting the elderly, enjoying a banquet on the day of Chongyang, and being grateful for respecting the elderly. Climbing the mountain to enjoy autumn and giving thanks to respect for the elderly are two important themes of today's Double Ninth Festival.

according to the existing historical data and textual research, the origin of the Double Ninth Festival can be traced back to ancient times, when there were activities such as harvest and ancestor worship in the autumn. According to Lu's Spring and Autumn Annals, the ancients offered sacrifices to the Heavenly Emperor and ancestors during the harvest of crops in September to thank the Heavenly Emperor and ancestors for their kindness. This is the original form of the Double Ninth Festival as an autumn harvest sacrifice activity. The Double Ninth Festival began in ancient times, spread in the Western Han Dynasty, and flourished after the Tang Dynasty. The Tang Dynasty is an important period in which traditional festival customs are mixed and shaped, and its main part has been passed down to this day. The ancestral worship of Chongyang has been going on for thousands of years, which is an ancient folk custom with profound significance. Double Ninth Festival, New Year's Eve, Tomb-Sweeping Day and July 3 are also called the four traditional ancestral festivals in China.

In the historical development and evolution, the Double Ninth Festival is a mixture of various folk customs and carries rich cultural connotations. In the folk concept, "nine" is the largest number in the number, which has the meaning of long life and is entrusted with people's wishes for the health and longevity of the elderly. In 1989, the ninth day of the ninth lunar month was designated as "Respect for the Elderly", which advocated the whole society to establish an atmosphere of respecting, respecting, loving and helping the elderly. On May 2th, 26, the Double Ninth Festival was listed in the first batch of national intangible cultural heritage by the State Council.