How about digging a vegetable pit in a geomantic merchant's house?

Does the subject want to ask, "Is it good for commercial enterprises to dig vegetable pits?" All right. Vegetable cellar can prolong the storage time of vegetables. Vegetable cellar is a cellar used to store vegetables in winter, which is widespread in northern China. Winter in northern China is very cold. In order to prevent vegetables from freezing, a 2-3 meter deep basement was dug underground to store vegetables. This kind of vegetable cellar can keep 0-5℃ without heating.