during what dynasty did the chinese make explosives
History of gunpowder Gunpowder is the first physical explosive and propellant. Before its invention, many incendiary and burning devices had been used, including Greek fire. The invention of gunpowder is attributed to experimentation in Chinese alchemy by Taoists in the pursuit of immortality, and is popularly listed as one of the "Four Great Inventions" of China. It was invented during the late Tang dynasty (9th century) but the earliest record of a written formula appeared in the Song dynasty (11th century). Knowledge of gunpowder spread rapidly throughout the Old World possibly as a result of the Mongol conquests during the 13th century, with the earliest written formula for it outside of China contained within the Opus Majus, a 1267 treatise by the English friar Roger Bacon. It was employed in warfare to some effect from at least the 12th century in weapons such as fire arrows, bombs, and the fire lance before the appearance of the gun. While the fire lance was eventually supplanted by the gun, other gunpowder weapons such as rockets continued to see use in China, Korea, India, and eventually Europe. Bombs too never ceased to develop and continued to progress into the modern day as grenades, mines, and other explosive implements. Gunpowder has also been used for non-military purposes such as fireworks for entertainment, or in explosives for mining and tunneling.
History of paper During the Shang (1600–1050 BC) and Zhou (1050-256 BC) dynasties of ancient China, documents were ordinarily written on bone or bamboo (on tablets or on bamboo strips sewn and rolled together into scrolls), making them very heavy, awkward, and hard to transport. The light material of silk was sometimes used as a recording medium, but was normally too expensive to consider. The Han dynasty Chinese court official Cai Lun (ca. 50–121) is credited as the inventor of a method of papermaking (inspired by wasps and bees) using rags and other plant fibers in 105 CE.[4] However, the discovery of specimens bearing written Chinese characters in 2006 at Fangmatan in north-east China's Gansu Province suggests that paper was in use by the ancient Chinese military more than 100 years before Cai, in 8 BC, and possibly much earlier as the map fragment found at the Fangmatan tomb site dates from the early 2nd century BC.[7] It therefore would appear that "Cai Lun's contribution was to improve this skill systematically and scientifically, fix a recipe for papermaking".[10]