Four great plateaus raise highland China, four great basins hide oases and the Land of Abundance, three great plains feed most of the people — eleven land units, one inventory of the map.
The three steps are a vertical section; laid flat, they become an inventory sheet: four great plateaus, four great basins, three great plains, plus the southeastern hills. Each unit is a world of its own — its own climate, produce, dialect and way of life. Master these eleven units and China’s relief map stands up in your head.
The Qinghai–Tibet Plateau: averaging above 4,000 meters, snowfields and alpine meadow — the roof of the world and Asia’s water tower. The Inner Mongolian Plateau: open, rolling and vast, where meadow meets desert steppe — the heart of China’s pastoral country. The Loess Plateau: built of windblown dust, gullied and eroded, yet a cradle of dry farming and of Huaxia civilization — the cave dwellings (yaodong) are cut into its silt.
The Yungui Plateau: a showcase of karst — stone forests, caves, waterfalls and sinkholes; “not three li of flat land,” with the small intermontane basins (bazi) as the treasured ground of settlement and tillage. Four plateaus, four temperaments — alpine, open, broken, craggy — rearing four entirely different ways of life.
The Tarim Basin is China’s largest, with the Taklamakan — the largest desert — lying in its center and a ring of oases fed by snowmelt along its rim. The Junggar Basin sits at higher latitude, with a western gap that lets Atlantic moisture in, so steppe and desert share it. The Qaidam Basin, at 2,600–3,000 m the highest in China, is the “treasure bowl”: salt lakes and minerals everywhere.
The Sichuan Basin is another creature altogether: purple sandstone weathers into fertile purple soil, and the Dujiangyan irrigation made the Chengdu plain the “Land of Abundance.” Three of the four basins lie in the arid northwest, one in the humid southwest — enclosed or open, dry or wet, decides whether they become desert, salt pan or granary.
The Northeast Plain — the largest, its black soil famously rich, China’s granary. The North China Plain — alluviated by the Yellow, Huai and Hai rivers, the densest farmland, source of wheat and cotton. The middle-lower Yangtze plains — a fish-and-rice country of canals, the richest belt of all. All three were built by great rivers, mostly below 200 meters; they cover under a tenth of the land yet carry nearly half the people.
Beyond the plains come the hills: the southeastern hills shatter the green of Jiangnan and Lingnan into terraces, tea gardens and red earth — the living form of “seven parts hill, one part water, two parts field.” Farmland is precious; on the plains every inch counts — the geography behind China’s “red line” of 1.8 billion mu of arable land.