The Tuen Ng or Duanwu Festival, also often known, especially in the West, as the Dragon Boat Festival, is a traditional holiday originating in China, occurring near the summer solstice. It is also known as Zhongxiao Festival (Chinese: 忠孝節; pinyin: Zhōngxiàojié), commemorating fealty and filial piety. The festival now occurs on the 5th day of the 5th month of the traditional Chinese calendar, which is the source of the festival’s alternative name, the Double Fifth Festival.

The Chinese calendar is lunisolar, so the date of the festival varies from year to year on the Gregorian calendar. In 2014, it fell on June 2; in 2015, on June 20; and in 2016, it occurred on June 9.