The valley that kept being the capital

Chang'an, the Wei river, and the eastern end of the overland routes.

What you should be able to do after this: Explain why one river valley in northern China held imperial capitals for more than a thousand years, and what a planned capital city was for.

0 of 4 · about 9 min

Start with geography

Defensible, fertile, and facing the right way

The Wei is the Yellow River's largest tributary, and its valley in Shaanxi has an unusual combination of qualities. It has loess soil that farms well, mountains and passes that make it defensible from the east, and an opening westward toward the corridor that leads out of China proper.

A capital wants all three: food nearby, a hard approach for an army, and access to the frontier it is trying to control. That combination is why the same valley held capitals under the Zhou, Qin, Han, Sui and Tang.

On the map

The Wei Xi'an

Check your understanding

Which river's valley held these successive capitals?

Answer the check to continue.

Sources for this chapter

UNESCO · Mausoleum of the First Qin EmperorUNESCO World Heritage Centre · checked 2026-09-07

Every source in this quest

UNESCO · Mausoleum of the First Qin EmperorUNESCO World Heritage Centre · intergovernmental · checked 2026-09-07
UNESCO · Silk Roads: the Routes Network of Chang'an-Tianshan CorridorUNESCO World Heritage Centre · intergovernmental · checked 2026-09-07
UNESCO · Historic Monuments of Ancient NaraUNESCO World Heritage Centre · intergovernmental · checked 2026-09-07

Written by Globe Quest editorial and last reviewed 2026-09-07. Every claim above is traceable to one of these sources; where accounts genuinely differ, the chapter says so rather than choosing for you.