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Yuwen Kai

Original nameYuwen Kai

Great architect of the Sui, planner of Daxing (Chang’an)

Another Set of Rules for Building the World · Eastern Building
Sui DynastyCapital PlanningChang'anGrand Canal

Who they are

An architect and engineer of the Sui dynasty, one of the greatest city planners of ancient China. Commissioned to plan and build the Sui capital Daxing — the later, world-famous Tang Chang’an. The city was strictly ordered and symmetrical, its wards clearly divided, a central axis running north to south, on a scale to hold a million people — the largest, most advanced city in the world of its day, and the model that East Asian capitals (Japan’s Heijō-kyō and Heian-kyō) rushed to imitate. He also directed palaces, ritual halls, and works of the Grand Canal. He made the Chinese ideal of the capital — "unity of heaven and man, square and symmetrical" — into a real, grand order upon the earth.

Primary sourcesBook of Sui, "Biography of Yuwen Kai"the ruins of Tang Chang’an

Key stories

A City of a Million on One Set of Plans

Planning Daxing, Yuwen Kai first designed the whole city on paper as a strict grid: symmetrical about a central axis, with regular wards, markets, palace city, and imperial city. This huge city for a million was all but "designed" and then built at once. It embodies the ancient Chinese pursuit of urban order to the extreme, and became the blueprint for Tang Chang’an and Japan’s ancient capitals — the shape of the East Asian capital was largely laid by him.

Relationships

Mentor
📗Li Jie　a forerunner of China’s rational tradition of capital and building

Echoes today

Below are how modern works borrow or reinterpret this name or story — not the original material. The two differ, so keep them apart.

Blueprint of the East Asian capitalThe Daxing (Tang Chang’an) Yuwen Kai planned was the largest, most advanced city of its day, its strictly symmetrical ward system the model that East Asian capitals like Japan’s Heijō-kyō and Heian-kyō rushed to imitate.

Appears in

Eastern BuildingYuwen Kai: Planning Chang’an
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