China invented ham in Song Dynasty. The word "ham" first appeared in the Northern Song Dynasty. Su Dongpo clearly recorded the practice of ham in the book "Talking about Things and Diet": "Ham is cooked with pig pancreas, and the oil is gone. Ham in the valley, not oily for decades, a bran cloud. " It is said that Zong Ze, a famous anti-gold star in the Northern Song Dynasty, brought back a few pieces of bacon from his hometown of Yiwu, Zhejiang, and tasted it for Zhao Gou, Song Gaozong. Zhao Gou was ecstatic when he saw that this piece of meat was as red as fire and tasted delicious, so he named it "ham". The production of ham requires multiple technological processes, and it is rich in minerals and protein. It is not only a mouth-watering delicacy, but also a tonic.