John Psmith would like to debunk the claim in the headline here:
An illustration of a fireworks display from the 1628-1643 edition of the Ming dynasty book Jin Ping Mei (1628-1643 edition).
Reproduced in Joseph Needham (1986). Science and Civilisation in China, Volume 5: Chemistry and Chemical Technology, Part 7: Military Technology: The Gunpowder Epic. Cambridge University Press. Page 142.
There’s an old trope that the Chinese invented gunpowder and had it for six hundred years, but couldn’t see its military applications and only used it for fireworks. I still see this claim made all over the place, which surprises me because it’s more than just wrong, it’s implausible to anybody with any understanding of human nature.
Long before the discovery of gunpowder, the ancient Chinese were adept at the production of toxic smoke for insecticidal, fumigation, and military purposes. Siege engines containing vast pumps and furnaces for smoking out defenders are well attested as early as the 4th century. These preparations often contained lime or arsenic to make them extra nasty, and there’s a good chance that frequent use of the latter substance was what enabled early recognition of the properties of saltpetre, since arsenic can heighten the incendiary effects of potassium nitrate.
By the 9th century, there are Taoist alchemical manuals warning not to combine charcoal, saltpetre, and sulphur, especially in the presence of arsenic. Nevertheless the temptation to burn the stuff was high — saltpetre is effective as a flux in smelting, and can liberate nitric acid, which was of extreme importance to sages pursuing the secret of longevity by dissolving diamonds, religious charms, and body parts into potions. Yes, the quest for the elixir of life brought about the powder that deals death.
And so the Chinese invented gunpowder, and then things immediately began moving very fast. In the early 10th century, we see it used in a primitive flame-thrower. By the year 1000, it’s incorporated into small grenades and into giant barrel bombs lobbed by trebuchets. By the middle of the 13th century, as the Song Dynasty was buckling under the Mongol onslaught, Chinese engineers had figured out that raising the nitrate content of a gunpowder mixture resulted in a much greater explosive effect. Shortly thereafter you begin seeing accounts of truly destructive explosions that bring down city walls or flatten buildings. All of this still at least a hundred years before the first mention of gunpowder in Europe.
Meanwhile, they had also been developing guns. Way back in the 950s (when the gunpowder formula was much weaker, and produced deflagarative sparks and flames rather than true explosions), people had already thought to mount containers of gunpowder onto the ends of spears and shove them in peoples’ faces. This invention was called the “fire lance”, and it was quickly refined and improved into a single-use, hand-held flamethrower that stuck around until the early 20th century.1 But some other inventive Chinese took the fire lances and made them much bigger, stuck them on tripods, and eventually started filling their mouths with bits of iron, broken pottery, glass, and other shrapnel. This happened right around when the formula for gunpowder was getting less deflagarative and more explosive, and pretty soon somebody put the two together and the cannon was born.
All told it’s about three and a half centuries from the first sage singing his eyebrows, to guns and cannons dominating the battlefield.2 Along the way what we see is not a gaggle of childlike orientals marvelling over fireworks and unable to conceive of military applications. We also don’t see an omnipotent despotism resisting technological change, or a hidebound bureaucracy maintaining an engineered stagnation. No, what we see is pretty much the opposite of these Western stereotypes of ancient Chinese society. We see a thriving ecosystem of opportunistic inventors and tacticians, striving to outcompete each other and producing a steady pace of technological change far beyond what Medieval Europe could accomplish.
Yet despite all of that, when in 1841 the iron-sided HMS Nemesis sailed into the First Opium War, the Chinese were utterly outclassed. For most of human history, the civilization cradled by the Yellow and the Yangtze was the most advanced on earth, but then in a period of just a century or two it was totally eclipsed by the upstart Europeans. This is the central paradox of the history of Chinese science and technology. So … why did it happen?
1. Needham says he heard of one used by pirates in the South China Sea in the 1920s to set rigging alight on the ships that they boarded.
2. I’ve left out a ton of weird gunpowder-based weaponry and evolutionary dead ends that happened along the way, but Needham’s book does a great job of covering them.
