137教学法是什么

简介：Su Can said: I made a calculation specifically. According to the wholesale price in the vegetable market, vegetable ingredients are only 1.50 cents per kilogram. Adding the cost of seasoning, water, electricity, labor and other costs, the profit of each bunch is at least half. In addition, The profits of flavored barbecue, wine and beverages are even more generous, and you can make money that month!