Dragon Jiaozi

Jiaozi's origin and development
Jiaozi are one of the major foods eaten during the Chinese New Year and year round in the northern provinces. They look like the golden ingots yuan bao used during the Ming Dynasty for money and the name sounds like the word for the earliest paper money, so serving them is believed to bring prosperity. Many families eat these at midnight on Chinese New Year's Eve. Some cooks will even hide a clean coin for the lucky to find.
Jiaozi were so named because they were horn shaped. The Chinese for "horn" is jiǎo (角), and jiaozi was originally written with the Chinese character for "horn", but later it was replaced by a specific character 餃, which has the food radical on the left and the phonetic component jiāo (交) on the right.
According to folk tales, jiaozi were invented by Zhang Zhongjing, one of the greatest practitioners of traditional Chinese medicine in history. They were originally called "tender ears" (娇耳; pinyin: jiao'er) because they were used to treat frostbitten ears.