Two. The grade is marked by diamonds, one diamond is the first grade, two diamonds are the second grade, and three diamonds are the third grade. The more diamonds, the higher the level of catering enterprises. The first store of Mingjia Restaurant was established on 20 13. There are four main core chain catering brands in the company, namely, Mingjia Courtyard Private Cuisine, Mingjia Dim Sum, Mingjia Rice and Mingjia Food Club. By September 15, 2022, the private kitchen of Mingjia's courtyard is in the first file, and Mingjia rice and Mingjia cuisine are in the third and second files.