Ersu is a traditional pasta in Jinzhong and Northern Shanxi Province, commonly known as "Niange Tower". Mao Ersu has a history of 1,500 years. In June 2008, Shanxi Mao'er Cake making technique was awarded the national intangible cultural heritage by the State Council. It has become a unique asset of Shanxi culture and a pearl of Chinese food culture. The origin of cat ear cake. Cat's ear cake originated from Xiaojiapian. Shanxi Xiaoluopian originated before the Northern Wei Dynasty and is very similar to the "fufu" mentioned by Jia Sixie in "Qi Min Yao Shu".