Officially Inner Mongolia is classified as one of the provincial-level divisions of North China, but its great stretch means that parts of it belong to Northeast China and Northwest China as well. It borders eight provincial-level divisions in all three of the aforementioned regions (Heilongjiang, Jilin, Liaoning, Hebei, Shanxi, Shaanxi, Ningxia, and Gansu), tying with Shaanxi for the greatest number of bordering provincial-level divisions. Most of its international border is with Mongolia,[lower-alpha 2] which, in Chinese, is sometimes called "Outer Mongolia", while a small portion is with Russia's Zabaykalsky Krai.