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, and the company has four flagship chain catering brands, namely Mingjia Courtyard Private Cuisine, Mingjia Dim Sum, Mingjia Rice and Mingjia Food Package. As of September 15, 2022, the private kitchen of Mingjia's courtyard is at the first level, and the set meal of Mingjia rice and Mingjia food is at the third level.