The Mid-Autumn Festival, also known as the Moon Festival, or in Chinese, Zhongqiu Jie, is a popular harvest festival celebrated by Chinese people. It is also sometimes referred to as the Lantern Festival or Moon cake Festival.

The Mid-Autumn Festival is held on the 15th day of the eighth month in the Chinese calendar, which is usually around mid or late September in the Gregorian calendar. It is a date that parallels the autumn and spring Equinoxes of the solar calendar, when the moon is supposedly at its fullest and roundest. The traditional food of this festival is the mooncake, of which there are many different varieties.

The Mid-Autumn Festival is one of the two most important holidays in the Chinese calendar, the other being the Chinese New Year, and is a legal holiday in several countries. Farmers celebrate the end of the summer harvesting season on this date. Traditionally, on this day, Chinese family members and friends will gather to admire the bright mid-autumn harvest moon, and eat moon cakes and pomeloes together. Accompanying the celebration, there are additional cultural or regional customs, such as:

Eating moon cakes outside under the moon
Carrying brightly lit lanterns, lighting lanterns on towers, floating sky lanterns
Burning incense in reverence to deities including Chang'e
Planting Mid-Autumn trees
Collecting dandelion leaves and distributing them evenly among family members
Fire Dragon Dances

Some of the basic:
The History
Origin Of Mid-Autumn Festival
The Habit & Custom in China and Globe
Moon Cake Workshop
Traditional Games and Handicrafts for the Holiday
Great shows and exhibition