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Proper fruit, the fruit of Tanabata, also known as clever food or clever tongue, is a traditional cake with Shanghai characteristics and a festival food for Tanabata. Folk people often use "seven bends and eight bends" to describe the shape of "seven clever".
There is a custom in rural areas of Shanghai suburbs, that is, when newly-married women go to their parents' homes on the seventh day of the seventh lunar month (commonly known as Qiao Day), they all bring some proper fruit back from their parents' homes and give it to their husbands. Therefore, the production season in proper fruit is around the seventh day of the seventh lunar month every year.
It is also a must-have food for Qixi in Shaoxing. It is also a gift given to grandchildren by relatives in Wenzhou at the seventh day of July. At the same time, there is also proper fruit, Shandong Province with great Jiaodong characteristics. When making it, there are special proper fruit clips, that is, molds. Most of the clips of Ka proper fruit are carved with jujube and pear wood.
References:
Baidu Encyclopedia-proper fruit