It's about 500 kilometers away, so you need to take a bus.
Changzhi Island is located 7.3 kilometers southeast of Dinghai City, 350 meters away from Zhoushan Island and 600 meters away from Aoshan Mountain in the south. Nanjing, referred to as "Ning", was called Jinling and Jiankang in ancient times. It is the capital, sub-provincial city, megacity and core city of Nanjing metropolitan area.