外東北
The Yuan directly ruled over parts of modern China, Korea, Mongolia, and Siberia (Russia). Specifically, the Yuan extended to Manchuria (modern Northeast China and Outer Manchuria), Mongolia, Siberia, the Tibetan Plateau and parts of Xinjiang. People from these 'Inner Asian' regions either belonged to the 'Mongol' class, 'Northern Han' class, or 'Semu' class.