Where is the interior and exterior Great Wall of China?

There is no interior and exterior Great Wall of China. The Great Wall of China is generally classified into two major parts, the northern Great Wall and the southern Great Wall. The northern part is composed of the Badaling Great Wall, Mutianyu Great Wall, Jinshanling Great Wall, and Simatai Great Wall, which are located north of Beijing and have been well preserved. The southern part consists of the Great Wall at Jiayuguan Pass and the Great Wall at Shanhaiguan Pass, which are located at the westernmost and easternmost ends of the wall.