Why didn't Bao 'an District let go of the policy of Xiaoshengchu?

Bao 'an District issued the policy of "small promotion at the beginning". As of June 12, 2023, according to the inquiry of official website, the Education Bureau of Baoan District, Shenzhen, on June 5, 2023, the enrollment policy for freshmen in autumn 2023 in Baoan District was released. Baoan District, which belongs to the northwest of Shenzhen, Guangdong Province, is connected to Dongguan in the north, Nanshan District in the south, Longhua District and Guangming District in the east and the Pearl River Estuary in the west, with a total area of 396.6 square kilometers.