As far as the textbooks edited and published at present are concerned, guzheng graded tracks are generally divided into 9 grades or 10 grades. For example, the textbooks compiled by the Music Rating Committee of the China Musicians Association are divided into 9 grades; The textbooks compiled by the Chinese National Orchestra Society are divided into 10 levels. There are also textbooks published by other art colleges and government departments, and there are also 9 grades or 10 grades. Whether it is divided into 9 grades or 10 grades, its purpose is the same: first, most of these tracks, which measure the learning level and artistic level, are the same; In other words, the tracks of Grade 9 and Grade 10 basically belong to the same level in playing skills and artistic level. It's like taking a bus. You have to reach your destination from the starting point, and the distance is certain. As for your stops, it doesn't seem to matter. Second, no matter how many levels are divided, the purpose is to define a convention standard that is recognized by experts, relatively standardized and easy to identify and operate, and as a basis for evaluating compliance, it is divided into the first level and the second level-the ninth level and the tenth level. In fact, this is entirely the product of learning Zheng and taking exams in recent years. It should be noted that the level is not divided by the addition and subtraction of mathematical concepts, but by the technical content as a means to achieve the quality of artistic expression.