The Mooncake Festival, also known as the Mid-Autumn Festival, is a traditional celebration in many East Asian cultures, particularly in China. It occurs on the 15th day of the 8th month of the lunar calendar, when the moon is at its fullest and brightest. Families gather to admire the moon, enjoy festive foods, and celebrate the harvest. A key feature of the festival is the sharing and eating of mooncakes, which are round pastries filled with various ingredients like lotus seed paste or red bean. The festival symbolizes reunion and harmony, as families come together to honor their ancestors and express gratitude for the harvest.