Gulou District, located in the northwestern side of the downtown Nanjing in Jiangsu Province, bordering to the east on Xuanwu District, to the south on Baixia and Jianye districts, joined with Jianye District by a river on the west, next to Xiaguan Distri是什么意思 Gulou District, located in the northwestern side of the downtown Nanjing in Jiangsu Province, bordering to the east on Xuanwu District, to the south on Baixia and Jianye districts, joined with Jianye District by a river on the west, next to Xiaguan Distri怎么读