1, sea plains
2, lakes and lakes and siltation plains
3, the cover to the modern river alluvial floodplain-based
4, the cover of the Quaternary loose sediment-based, riverbed with modern alluvial valleys
5, the rock soft Quaternary sediments of the slow mound (250 meters)
6, by a certain settlement of the scattered hills, the plain on the Gushan (mostly at an altitude of 500 meters)
7, significant rise and erosion of the hills (at an altitude of 1000 meters)
8, a strong rise in the strong erosion of Zhongshan
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