Guns were invented in China around the 10th century. The invention of gunpowder, which is crucial to the development of guns, is believed to have occurred in the 9th century in China. The earliest guns, known as "fire- spurting lances" or fire lances, were bamboo or metal tubes filled with gunpowder that could spew flame and projectiles. These were used during the Jin-Song wars in the Song dynasty era (960 to 1279) and are considered the first guns or proto-guns. Early cannons also appeared as "Flying-cloud Thunderclap Eruptors," which were mounted and could fire explosive projectiles. The technology evolved over time, spreading to Europe and other parts of the world, with handguns appearing around the 15th century. The first matchlock guns, which allowed for easier firing, were developed during this period. By the late 19th century, significant advancements like machine guns were invented. In summary:

• Gunpowder invented: 9th century (China)
• First guns (fire lances): 10th century (China)
• Early cannon-like firearms: Song dynasty era (960–1279)
• Matchlock guns: 15th century (Europe)
• Machine guns: Late 19th century

The invention of guns thus started in China about a millennium ago and gradually evolved into modern firearms over centuries.