Original text:
There was a doctor named Zhang Zhongjing at the end of the Eastern Han Dynasty. He has a good medical skill, and he can get rid of any disease at his fingertips. People all call him a "magic doctor".
One winter, when Zhang Zhongjing came back from practicing medicine in other places, he saw the poor people's bodies, faces and especially their ears were frozen because of lack of cotton-padded clothes. Some people even turn black and fester their ears. He is anxious in his heart when he sees it in his eyes.
As soon as he got home, Zhang Zhongjing and his disciples immediately set up a shed in the open space and put it on a big pot. In it, some mutton, pepper, ginger, pepper, fennel, Gleditsia sinensis and other cold-dispelling herbs were put into the pot to boil. After cooking, take it out and break it, and then cook it with bread in the shape of ears. Zhang Zhongjing called it "Quhan Jiaoer Decoction".
On the winter solstice, people crowded around the shed. Zhang Zhongjing and his disciples gave everyone a bowl of cold-dispelling soup and two charming ears. Strangely enough, people feel hot in their ears and warm all over after drinking Quhan decoction and eating Jiaoer. My ears were all healed in less than half a month.
Later, on the day of the winter solstice, people would make jiaozi eat in imitation of Jiao Er. People say that jiaozi won't freeze his ears after eating the winter solstice.