15. According to the query of Tianjin College Entrance Examination Network, in 2023, the last two analytical questions of Tianjin College Entrance Examination Mathematics scored 15, with a score of ***30. Tianjin is a municipality directly under the Central Government of the People's Republic of China, a national central city, a megacity, an international consumption center city and an economic center around the Bohai Sea. The city has 16 districts with a total area of 1 1966.45 square kilometers.