The Mid-Autumn Festival, celebrated on the 15th day of the 8th lunar month when the moon is at its fullest and brightest, is a harvest festival across East Asia. It is second only to Chinese New Year in cultural importance for many Chinese communities.
The festival dates back over 3,000 years to harvest celebrations in the Shang Dynasty. It became a major holiday during the Tang Dynasty (618-907 CE). The legend of Chang'e — the Moon goddess who drank an immortality elixir and floated to the moon — is the most beloved associated myth.
Families gather to gaze at the full moon, eat mooncakes, and light decorative lanterns. Children carry colorful lanterns. In Vietnam, the festival (Tết Trung Thu) is especially child-centered with lion dances and lantern parades.
Mooncakes (yuèbǐng) — dense pastries with lotus seed paste, red bean paste, or salted egg yolk fillings — are the iconic food, exchanged between family, friends, and business associates. Pomelo, taro, and seasonal fruits.
"中秋节快乐" (Zhōngqiūjié kuàilè) · "Happy Mid-Autumn Festival"
Public holiday in China (1 day, often extended), Taiwan, Hong Kong, Macau, South Korea (Chuseok, 3 days), Vietnam (informal). Mooncake gifting peaks in the weeks before — boxed mooncakes are major retail items.