Vermicelli making skills (Chen Tao Laoqi vermicelli making skills), a traditional skills project in the fourth batch of representative projects of Yancheng City-level intangible cultural heritage. "Chen Tao (Laoqi) vermicelli making skills" is a folk traditional skill that people in Binhai County, the main production area of sweet potatoes, have used to preserve and extract the nutritional value of sweet potatoes to the greatest extent in the process of eating sweet potatoes for more than 100 years, based on the characteristics of sweet potatoes and their natural and simple production and processing methods. Laoqi vermicelli is the pioneer of the sweet potato processing industry in Binhai 140 years ago. There are relevant records in the "Funing County Chronicles" of the 12th year of Guangxu (Binhai County was not established before it was collectively referred to as Funing with the current Funing County), the "Funing County New Chronicles" of the 21st year of the Republic of China, "Binhai County Chronicles", "Qi's Genealogy" and other historical materials. "Laoqi vermicelli" uses sweet potatoes that are rotated with wheat as raw materials, and is divided into nine processes of "scraping, washing, cutting, grinding, shaking, hammering, silting, draining, and drying", namely the "Qi's Nine Methods". Scraping is a knife method for peeling sweet potatoes with mud. This knife technique will not form an incision on the sweet potato skin, avoiding soil contamination of the sweet potato powder slurry; wash, use willow baskets and other Bagua pattern vessels, and use centrifugal shaking to wash. The sweet potato slices are directly placed in a ventilated place to dry in the shade, mixed with water and ground with a stone mill. After the slurry is diluted with water, it is shaken with a special slurry to remove the slag in the slurry. The filtered sweet potato slurry is placed in a ceramic vessel for sedimentation. After the sediment reaches the required fineness, the hanging ball is taken out to drain the water, and then it is dried in the light and coarsely ground to form sweet potato powder. After the sweet potato powder is dried, it is put into a stone pestle and hammered to make the starch very tough, which is convenient for producing vermicelli. This is the unique process of "Laoqi Vermicelli". When making sweet potato vermicelli, alum is generally added to make the vermicelli tough and easy to shape, but alum is toxic and harmful to the human body. "Laoqi Vermicelli" abandoned the process of adding alum and created a unique process of hammering with a stone pestle to make the starch tough, making the vermicelli greener and healthier. (No pictures yet, welcome to provide.) (No pictures yet, welcome to provide.)