Sanzhi education quality training center. In Nanhui District, Shanghai, the college entrance examination institutions that help students are: Sanzhi Education Quality Training Center, Gusi Education and so on. This education is to help senior three children review the contents of the college entrance examination quickly. Nanhui District is located in the southeast of Shanghai, bordering Hangzhou Bay in the south, the East China Sea in the east, Pudong New Area in the north, Fengxian District and Minhang District in the west.