Do 28 schools in Nanjing only recruit fresh graduates?

28 schools in Nanjing only recruit fresh graduates. Nanjing CLP 28 has requested to recruit graduates with the first degree from 985 key universities and 2 1 1 key engineering universities, and ordinary people are not allowed to enter. Nanjing, formerly known as Jinling and Jiankang, is the capital of Jiangsu, a sub-provincial city, a megacity, the core city of Nanjing metropolitan area, and an important central city in eastern China determined by the State Council.