750 points. 20 18, 20 19, the total score of zero diagnosis in 2020 is 750. Bazhong, a prefecture-level city in Sichuan Province. Located in the south of the Qinling-Huaihe North-South Boundary Line in China, it is the geometric center of Chengdu, Chongqing and Xi 'an, and an important node connecting the Belt and Road Initiative and Chengdu-Chongqing Guantian Economic Zone. The zero diagnosis test is actually a model test, which is a school-wide or city-wide test for students to sum up the teaching effect in the second stage of high school when they first enter high school, clarify the objectives and tasks of high school and improve the review efficiency. The test result is the ranking of the whole school or the whole city.