Jiuwangzhuang upstream waterfront. According to official website of Tianjin Tourism Bureau, as of April 4, 2023, there is the largest elm forest in Tianjin on the upstream bank of Jiuwangzhuang in Tianjin. Tianjin, also known as Jingu and Jinmen, is a provincial administrative region, municipality directly under the Central Government, national central city, megacity and national advanced manufacturing R&D base in People's Republic of China (PRC).