Inner China was more attractive because of two physical lanforms; the North China Plain and the Chang Jiang Basins. Outer China had harsher landforms, like deserts and the Himalayas. Inner China contained rivers and land suitable for farming, whereas outer China was missing the feature.
Inner China was more attractive to early settlers than Outer China because Inner China had a more desirable climate and vegetation than Outer China. Outer China has a very harsh climate and little vegetation.
