The subject wants to ask, "Is Tianjin No.1 Middle School, the airport school in the bonded area, a public school?" ? Yes Tianjin Port Free Trade Zone Airport School is a nine-year public school jointly established with Tianjin No.1 Middle School. Tianjin, also known as Jingu and Jinmen, is a provincial administrative region, municipality directly under the Central Government, national central city and megacity of People's Republic of China (PRC) (China), and is the economic center of the Bohai Rim approved by the State Council.