Mashikou's silk cake nest is one of the "Three Treasures of Huai 'an", which originated in Mashikou Village, Dukoubao Township. Maxikou Village, Dukoubao Township, Huai 'an County, was the land of crows in three provinces in the old society. Dongyang River in the south and the ancient Great Wall in the north. Huaian tofu skin Huaian tofu skin is one of the local specialties of Huaian County. It is also called "Huai 'an Three Treasures" with Chaigoubao bacon and Mashikou a nest of silk cakes. Huaian tofu skin has a long history. According to legend, when Tang Xizong Li Xian was in power, Huai 'an Micro was established to strengthen border defense. After the completion of the new town, the county magistrate ordered a three-day celebration. Chaigoubao, an ancient town beyond the Great Wall. Chaigoubao bacon has become a treasure of traditional cultural food in China, with a history of more than 200 years. According to legend, during the Qianlong period of the Qing Dynasty, a chef named Guo opened a bacon shop here, which was famous in the area of Beijing-Baotou Line. The bacon skin he made is carrion.

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