According to the total reference population, the proportion of subjects from high score to low score is 25%, 30%, 26%, 10%, 8%, 1% respectively, which is expressed by six grades: A, B, C, D, E and F.

Wuzhou is a prefecture-level city under the jurisdiction of Guangxi. Wuzhou is the seat of Gucangwu County and Guguangxin County, and is one of the cradles of Cantonese and Lingnan culture. It has the reputation of "Greentown Water Capital", "Centennial Commercial Port" and "World Artificial Products Capital". It is a national forest city, a national garden city, a national double-support model city and an excellent tourist city in China.