Chinese courts tried to keep iron and iron goods from the peoples beyond the frontier. They feared that these peoples would arm themselves from Chinese metal.[1] The sources show the bans at four moments: the Han court, the debate of 177, the gift of armour to the Rouran khan in 521, and a Tang decree of 714.

Under the Han

The Han dynasty watched its frontier for iron. Under Emperor Wu, by 121 BC, the court arrested and executed five hundred merchants at Chang’an.[1] They had sold contraband, probably iron vessels, to the entourage of a Xiongnu chanyu who was in the capital.[1] A Xiongnu or Wuhuan burial site has yielded sizeable caches of iron weapons and implements made in Han China.[1] The same scholars hold that they can only have come as contraband, because the court did not present weapons to nomad rulers as gifts and did not allow them to be traded at the regulated frontier markets.[1] The Han Shu qualifies the rule for gifts.[2] At his audience in 51 BC the chanyu Huhanye received a jade-fitted sword, a belt knife, a bow with four arrows and ten halberds, beside a gold seal and twenty jin of gold.[2] The text does not say of what metal these arms were made.[2]

The debate of 177

In the reign of Emperor Ling the Han general Xia Yu asked for an army to destroy the Xianbei.[3] The councillor Cai Yong spoke against the plan, and the Hou Han Shu quotes his words.[3] He said that the Xianbei had grown strong since the Xiongnu fled, and that they held the Xiongnu’s old land.[3] The frontier passes were not strict, he went on, and the net of prohibitions had many holes.[3] Fine metal and good iron had all passed to the Xianbei, and Han fugitives served them as counsellors.[3] Their weapons were sharp and their horses swift, beyond those of the Xiongnu.[3]

The emperor did not follow Cai Yong.[3] Three Han columns marched out, and the Xianbei under Tanshihuai defeated them with heavy losses.[3] The article on Tanshihuai tells the campaign. Cai Yong speaks of a leak in the frontier. He names no smuggler and no market.[3]

Armour as a gift

The ban was not absolute where the court chose to arm a friend. In 521 the Northern Wei court sent the Rouran khan Anagui home with gifts.[4] They included two sets of fine armour for man and horse and six sets of iron armour for man and horse.[4] They also included lances, bows, shields and blades.[4] Anagui had come to the Wei court as a refugee. He had paid the minister Yuan Cha a hundred jin of gold to be allowed to go home.[4]

The decree of 714

A decree of the second year of the Kaiyuan period, 714, is known from a quotation in the Tang Huiyao.[5] It forbade the sale of brocade, damask, gauze, embroidery, fine silks, yak tails, pearls, gold and iron to the foreign peoples.[5] It also forbade anyone who was going into the foreign lands to carry objects of gold or iron across the western and northern frontier passes.[5] The decree comes from the years of the second khaganate.

The decree bans many goods besides iron. Some scholars therefore hold that the bans served the closed economy of the Chinese state as much as the protection of the frontier.[6] They grant that the ban on iron had a clear reason: China’s neighbours should not obtain weapons, or make weapons from Chinese iron.[6]

The Göktürks and Chinese iron

A Göktürk khan asked the Tang court for iron in the request of Kapgan in 698.[7] The Xin Tang Shu names iron in the list of the demand, and it does not name iron among the goods handed over.[7] The article on Göktürk ironworking tells of the iron that the Göktürks had of their own.

References

  1. ^ a b c d e Jagchid 1989, p. 183
  2. ^ a b c Han Shu, juan 94
  3. ^ a b c d e f g h i Hou Han Shu, juan 90
  4. ^ a b c d Wei Shu, juan 103
  5. ^ a b c Ecsedy 1968, p. 173
  6. ^ a b Ecsedy 1968, p. 145
  7. ^ a b Xin Tangshu (New Book of Tang), juan 215

Sources

Literature

  • Sechin Jagchid; Van Jay Symons, Peace, War, and Trade Along the Great Wall. Nomadic-Chinese Interaction through Two Millennia (1989)
  • Ildikó Ecsedy, Trade-and-War Relations between the Turks and China in the Second Half of the Sixth Century (1968)

Related

What links here5

Battles & Events
Kapgan's Request for Farm Tools and Iron (698)
Institutions and Titles
Chinese Weaponsmiths among the Xianbei · Raw Materials and Trade among the Turkic Peoples · The Economy of the Steppe Empires · Xiongnu Ironworking

Cite this article

Yavuz, Emre-E. “Chinese Bans on the Export of Iron.” Turkic Atlas, revised 8 November 2026. https://turkicatlas.org/institutions/iron-export-bans/

Last revised: 8 November 2026