Wang Xingmao Sauce and Pickle Shop. Wang Xingmao Sauce and Pickle Shop was founded in 1745, the tenth year of the Qianlong period. Now it is already more than 200 years old. The founder of the shop Wang Yueshan mainly engaged in the production of soy sauce, vinegar and pickled cabbage. The workshop of the family was behind their shop. You can see the traditional technique of making soy sauce in the workshop. The soy sauce was made by fermentation of soy bean, flour and salt water in the right proportion.