There is a proverb circulating in the workshop: Baoding has three treasures; Iron ball, flour paste, spring is not old. The first treasure: "Baoding iron ball" (commonly known as fitness ball) is not only an entertainment tool, but also has the function of mass watching fitness. The second treasure: "Baoding Noodle Sauce", which was first produced in the tenth year of Qing Emperor Kangxi, has a history of nearly 400 years. It has a good quality and a long-standing reputation. It is an ideal cooking seasoning. The third treasure: "Baoding is young in spring", also known as "potherb mustard", a common vegetable, which has a long history of cultivation in Baoding and is loved by people for its low price and good quality.