Many festivals in China follow the lunar calendar algorithm.

September 9 is the common name of the traditional Chinese festival, Double Ninth Festival. The Double Ninth Festival, also known as the Ninth Festival, Sunning the Autumn Festival, and "Taqiu". The celebration of the Double Ninth Festival usually includes activities such as going out to enjoy autumn, climbing high and overlooking, viewing chrysanthemums, planting dogwood everywhere, eating the Double Ninth Cake and drinking chrysanthemum wine. On the 9th day of September of the lunar calendar every year, it is called the four traditional festivals for ancestors in China, together with the New Year's Eve, the Qingming Festival and the Zhongyuan Festival. Chongyang Festival, which had been formed as early as the Warring States Period, was officially designated as a folk festival in the Tang Dynasty. Since then, it has been inherited from dynasties to the present.

What are the customs of Chongyang Festival?

Height-climbing tourism began in the Eastern Han Dynasty. There are many poems about climbing high in Tang Dynasty, most of which are about the custom of Chongyang Festival. Du Fu's seven-law "climbing high" is a famous poem about climbing high in Chongyang. There are no uniform rules for climbing mountains and towers. There is also the custom of eating "Double Ninth Cake".

Eat Chongyang cake，Chongyang Cake, also known as Flower Cake, Chrysanthemum Cake and Five-color Cake, is shaped like a pagoda. It is also made into two lambs to conform to the meaning of Chongyang (sheep). Modern Double Ninth Cake has no fixed style.

Appreciate chrysanthemum and drink chrysanthemum wine

On the Double Ninth Festival, many people imitated Tao Yuanming, a great poet of the Jin Dynasty. Until the Ming and Qing Dynasties, chrysanthemum wine was very popular.

Fructus Corni

The custom of cutting cornel and wearing chrysanthemum was popular in Tang Dynasty.

Archery

From the Northern and Southern Dynasties to the Tang Dynasty, on the day of Chongyang Festival, the imperial bureaucrats not only climbed high to compose poems and held banquets for joy, but also took part in archery, horse-riding and hunting activities. Like Queen Chen, he is addicted to sound and color, but also likes to walk horses and shoot arrows, and hunts again when he is subjugated. By the Tang Dynasty, archery and hunting activities in Chongyang were still popular.

Fly a kite

Kites, also known as "Harriers", have a history of two thousand years in China. There is a sentence in Minnan dialect: "September 9th, the wind whistles all over the sky", which describes the situation of kites flying all over the sky after Chongyang.

Respect for the elderly activities:

Because the homonyms of "99”have long-lasting meanings, there is a saying of longevity. As a result, Chongyang Festival has developed into a "Respect for the Elderly Festival". It is hoped that every elderly person will be rich and have a long life.

In 1975, in order to carry forward the tradition of "respecting the elderly and respecting filial piety", the Ministry of Interior of Taiwan set the Double Ninth Festival as the "Respecting the Elderly Day". Since then, every year on this day, the activities of respecting the elderly have been carried out everywhere to arouse people's attention to the elderly and respect for the elderly.

"The Double Ninth Festival is a traditional festival and a culture of respect for the elderly. Some volunteers of gmtlight hold various public welfare activities every year on the Double Ninth Festival. Mr. Niu, gmtlight

中国的很多节日是按照农历算法的。

九月九为中国传统节日重阳节的俗称。重阳节，又称重九节、晒秋节、“踏秋”。庆祝重阳节一般会包括出游赏秋、登高远眺、观赏菊花、遍插茱萸、吃重阳糕、饮菊花酒等活动。每年的农历九月初九日，与除夕、清明节、中元节三节统称中国传统四大祭祖的节日。重阳节，早在战国时期就已经形成，到了唐代被正式定为民间的节日，此后历朝历代沿袭至今。

重阳节都有哪些习俗？

登高旅游始于东汉。唐代文人所写的登高诗很多，大多是写重阳节的习俗；杜甫的七律《登高》，就是写重阳登高的名篇。登高所到之处，没有划一的规定，一般是登高山、登高塔。还有吃“重阳糕”的习俗。

吃重阳糕

重阳糕又称花糕、菊糕、五色糕，形如宝塔，上面还作成两只小羊，以符合重阳（羊）之义。现代重阳糕，没有固定样式。

赏菊并饮菊花酒

重阳节，许多人效仿晋朝大诗人陶渊明。一直到明清，饮菊花酒都非常流行

佩茱萸

插茱萸、戴菊花的风俗，在唐代已经普遍流行。

射箭

从南北朝一直到唐代，在重阳节当天，帝王官僚们除了登高作诗，举行宴会欢乐外，还有了射箭、纵马、围猎等活动。像陈后主就是沉迷于声色之外，还喜爱走马射箭，亡国时还要再猎一圈。到了唐代，重阳射箭围猎活动依然盛行。

放风筝

风筝也叫"鹞"，在中国有两千年的历史。闽南语中有一句话："九月九，风吹满天啸"，就是形容重阳以后，风筝满天飞的情形。

敬老活动：

由于“九九”和“久久”同音，有长长久久的含意，因此有令人长寿的说法。重阳节因此又发展为“敬老节”，有希望每位老人家，都能富贵长命的意义。

1975年，台湾省内政部为了弘扬“敬老崇孝”的传统，特别订定以重阳节为“敬老节”，此后每年的这一天，各地都展开敬老活动，唤醒民众重视老人、尊敬老人。 

“重阳节是一个传统节日，也是一种尊老文化。gmtlight的一些志愿者每年重阳节都要举行各种各样的公益活动。” 牛先生，gmtlight