Football field. According to official website of Tianjin University of Commerce, the football class is held in the football field, and students need to wear sportswear in class. Tianjin University of Commerce (TUC), located in Tianjin, is an institution of higher learning that focuses on business, with management, economy, engineering, law, literature, science and art supporting each other and developing harmoniously. It is a key university in Tianjin.