From The Memorial of The Nanjing Massacre to the City Wall

By City Wall, do you refer to the entrance of the wall at Jiefang Gate? If so, bus is accessible. Walk from the memorial hall to Middle Jiangdong Road Shuiximen Street bus stop to take bus no. 56 and get off at Xuanwumen. After getting off, walk east along Dongting Road and turn north to Kunlun Road to the City Wall.