The Mid-Autumn Festival (traditional Chinese: 中秋節; simplified Chinese: 中秋节; pinyin: zhōngqiū jié; Vietnamese: Tết Trung Thu) is a popular harvest festival celebrated by Chinese and Vietnamese people.[1][2] The festival is held on the 15th day of the eighth month in the Chinese calendar, during a full moon, which is in September or early October in the Gregorian calendar, close to the autumnal equinox.[1]

The Government of the People's Republic of China listed the festival as an "intangible cultural heritage" in 2006, and it was made a Chinese public holiday in 2008.[1] It is also a public holiday in Taiwan. Among the Vietnamese, it is considered the second most important holiday tradition.[3] The day following Mid-Autumn Festival is a public holiday in Hong Kong and Macau (the festival day itself is not a holiday in Hong Kong and Macau, the logic is that most celebrations are held at night).