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Students learn to make mooncakes at Nanguan primary school to greet the traditional Mid-Autumn Festival in Handan City, north China's Hebei Province, Sept. 21, 2018. The Mid-Autumn Festival falls on the 15th day of the eighth month of the Chinese lunar calendar, or Sept. 24 this year. (Xinhua/Wang Xiao)

Citizens buy mooncakes at a shop in Beijing, capital of China, Sept. 21, 2018. Mooncake is a traditional pastry for the Mid-Autumn Festival, which falls on the 15th day of the eighth month of the Chinese lunar calendar, or Sept. 24 this year. (Xinhua/Zhang Chenlin)? ?