The 9th day of the 9th lunar month is the traditional Chongyang Festival, or Double Ninth Festival, which falls on Oct 7 this year.

In an ancient and mysterious book Yi Jing, or The Book of Changes, number "6" was thought to be a Yin character, meaning feminine or negative, while number "9" was thought to be Yang, meaning masculine or positive. Therefore, the number nine in both month and day create the Double Ninth Festival, or Chongyang Festival.

Chong in Chinese means "double." Also, as double ninth was pronounced the same as the word to signify "forever", both are "Jiu Jiu", Chinese ancestors considered it an auspicious day worth celebration. That's why ancient Chinese began to celebrate this festival long ago.

Wearing cornel twigs (Dogwood)

The cornel (dogwood) is a species of evergreen arbor, which is a heavy-scented plant whose fruit is edible and stock and leaves can be medicinal materials. They can expel insects, get rid of the humidity, help digestion and cure inner heat. It puts out purple flowers in spring and bears in autumn, purplish-brown fruit that is sour and mild in nature.

Enjoying chrysanthemum flowers

Chrysanthemum originated in China and was recorded in some Chinese books as early as the 5th century BC. The flower was introduced as imperial flower to Japan during the Tang Dynasty. Then it was introduced to Britain in the 12th century, to the continent of Europe in the 17th century and to the US in the 19th century. Also known as "yellow flower", chrysanthemum is of varied species in the composite family. Though its florescence lasts long, this perennial herb usually begins to bloom in the 9th lunar month, lending a festive flavor to the Double Ninth Day. That's why the month is also referred to as "the month of chrysanthemum".

Eating Double Ninth cake

Double Ninth cake is also known as "chrysanthemum cake" or "flower cake". It dates back to the Zhou Dynasty (the 11th century � 256 BC). It is said that the cake was originally prepared after autumn harvests for farmers to have a taste of what was just in season, and it gradually became the cake for people to eat on the Double Ninth Day.

The cake was usually made of glutinous rice flour, millet flour or bean flour. In the Tang Dynasty, its surface was usually planted with a small pennant of multi-colored paper and bore at its center the Chinese character "ling" (order). The Double Ninth cake in the Song Dynasty was usually made with great care a few days before the Double Ninth Day, its surface covered with colored pennants and inlaid with Chinese chestnuts, ginkgo seeds, pine nut kernels and pomegranate seeds.

Climbing heights

People like to climb heights (mountains) on this festival, so Double Ninth Festival is also called "Mountain-climbing Festival".

The 9th lunar month, with clear autumn skies and bracing air, is a good time for sightseeing. An outing lover, who stands on a height looking afar this month, will have a panoramic view of a blue sky with pale clouds and dark green mountains, which makes him or her carefree and joyful.

Apart from expelling bad luck and disasters, climbing mountains also indicates "climbing to a higher position", and it is also an important reason why ancient people pay attention to this custom. Another reason that climbing mountains is valued by people, especially by the elderly, is that it means "climb to a longevous life".

Family get-togethers

The Double Ninth Festival is also a time for family get-togethers. It is an occasion to remember one's ancestors, the sacrifices they made and the hardships they underwent. Often, family outings are organized where people search to renew their appreciation of nature and to reaffirm their love and concern for family members and close friends.

People often gather for parties, enjoy chrysanthemums and pin cornel twigs on clothes. The customs of climbing mountains and eating a special cake is also featured this day.