Shanghai's mooncake manufacturers are banned from selling cakes that are made of leftover mooncakes.

After the Mid-Autumn Festival, some merchants purchase unsold mooncakes at a low price and then reprocess them into other cakes, the Shanghai Morning Post reported yesterday, citing Feng Fusheng, deputy secretary-general of the Shanghai Sugar-made Food Association.

Chinese people usually give boxes of mooncakes to their families, friends and business contacts around the Mid-Autumn Festival, which occurs on the 15th day of the eighth month on the lunar calendar.

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