The Tang Dynasty in 90 Minutes, Part 2: Chang'an, the Capital That Defined an Empire

The first part of this guide covered the Tang dynasty's political history — the founding, the reign of Empress Wu, the height of the Xuanzong era, the An Lushan Rebellion, and the dynasty's protracted decline. This second part focuses on the physical reality of Chang'an — the capital that the Tang dynasty created and that defined what a great Chinese city could be for centuries afterward.

The Grid Plan

Tang Chang'an (长安) was built to a plan: a rectangular enclosure of approximately 84 km², laid out on a strict cardinal-aligned grid with the palace complex at the northern centre and the city extending south from it. This was not organic urban growth — it was a designed city, planned and constructed to express imperial cosmological order.

The city was divided into approximately 108 walled wards (坊, fāng), each a self-contained neighbourhood enclosed by its own walls with gates that closed at night under curfew. The wards contained residences, temples, schools, and local markets. Life within the wards was regulated by curfew bells — after the drums rang, the ward gates closed and movement in the streets was prohibited. A city of a million people, managed by gate and bell.

Commercial activity was concentrated in two designated markets:

East Market (东市): the more prestigious market, near the palace, serving the aristocracy and official class. Chinese goods and domestic trade.

West Market (西市): the Silk Road market — the eastern terminus of the Central Asian trade routes. Persian, Sogdian, Indian, Arab, and Central Asian merchants traded here. The goods available included silk from China's interior, spices from India, glassware from Persia, horses from Central Asia, and commodities from across the known world. The West Market had formally recognised communities of foreign merchants and legally permitted practice of non-Chinese religions: Nestorian Christianity, Zoroastrianism, Islam, and Manichaeism all had sanctioned places of worship in Tang Chang'an.

The Scale

At its 8th-century peak — the reign of Xuanzong, approximately 700–750 CE — Chang'an held approximately one million people within the walled city, with additional population in the surrounding metropolitan area. This made it, by considerable margin, the largest city in the world at the time.

For comparison: Byzantine Constantinople, the capital of the Eastern Roman Empire and Chang'an's nearest equivalent in the western hemisphere, held approximately 300,000–400,000 people at its height. Baghdad, founded in 762 CE and also reaching enormous size, would eventually rival Chang'an's population but did so in a later century.

The administrative coordination required to supply, govern, and maintain order in a city of this scale — in the 8th century, without electricity, motor transport, or modern communication — is itself a remarkable achievement.

Cosmopolitanism as Policy

Tang cosmopolitanism was not incidental. The dynasty actively promoted it. The early Tang emperors had Xianbei (Turkic) ancestry on their mothers' sides; the dynasty was itself partly of non-Han origin. This background may have contributed to an openness to foreign influence that contrasts with the more closed attitudes of later dynasties.

The effects were visible throughout Tang culture:

• Music: Central Asian instruments — the pipa (Chinese lute), the konghou (harp), and various flutes — flooded into Chang'an and became the defining sounds of Tang court entertainment
• Dance: Central Asian and Indian dance styles were fashionable at the Tang court; the 'rainbow skirt and feathered coat' dance beloved by Xuanzong and Yang Guifei was allegedly Central Asian in origin
• Clothing: Hu (nomadic) fashion — tight-sleeved riding coats, trousers, caps — became fashionable among Tang women in the 8th century
• Food: new ingredients and dishes arrived via the Silk Road
• Religion: Buddhism reached its Chinese apogee in the Tang dynasty; Xuanzang's journey to India to retrieve scriptures (629–645 CE) produced both a scholarly achievement and the fictional basis for Journey to the West

The poet Du Fu described a Chang'an street scene where foreigners from across Central Asia were normal urban presences, not curiosities. This was the Tang world at its height.

What Survives in Modern Xi'an

Modern Xi'an (西安) is built on the site of Chang'an but does not replicate it. The Tang city was substantially larger than the Ming-era city walls that define Xi'an's preserved historic core today. The surviving Tang physical fabric is limited but significant:

Giant Wild Goose Pagoda (大雁塔): built in 652 CE by the monk Xuanzang to house the Buddhist sutras he brought back from India. Still standing, seven stories, approximately 64 metres tall. The surrounding plaza is modern and tourist-facing, but the pagoda itself is original Tang construction. One of the most historically significant standing structures in China.

Tang West Market Museum (大唐西市博物馆): built above the archaeological remains of the original West Market. The museum displays excavated Silk Road trade goods — coins, ceramics, glass, metalwork — from the market's operational period. The glass floor over the excavation area allows visitors to look down at the original market foundations.

Shaanxi History Museum (陕西历史博物馆): the finest Tang-period artefact collection in China. The Tang galleries include tri-colour (sancai, 三彩) glazed pottery figures — horses, camels, court ladies, Central Asian merchants — that were buried in Tang elite tombs. These figures give the most vivid material picture of Tang cultural life available in a museum setting. Free entry (reservation required); the Tang gallery section may have a separate fee. [VERIFY: source needed — May 2026]

The Xi'an City Walls: the walls visible in Xi'an today are Ming dynasty (14th century), built on the foundations of the Tang inner palace city. The Tang outer city extended well beyond these walls in all directions — the current south gate area of Xi'an was the middle of the Tang city, not its southern boundary.

Da Mingong National Heritage Park (大明宫国家遗址公园): the site of the Tang imperial palace, north of the Ming city walls. Now an archaeological park where the scale of the original palace complex — larger than Versailles — can be appreciated from the earthwork remains, with an interpretive museum.