Answer:
Tea has been so important in China that even the story of silk includes a probably anachronistic cup of it. Legend says silk was discovered when a cocoon fell from a mulberry bush into a cup of imperial tea. This is similar to the legend of the discovery of tea where an emperor (Shen Nung, 2737 B.C.) drank a cup of water into which leaves from an overhanging Camellia bush had fallen. The principle behind gunpowder was discovered by the Chinese in perhaps the first century, during the Han Dynasty. It wasn't used in guns at the time but created explosions at festivals. They mixed together saltpeter, sulfur, and charcoal dust, which they put into bamboo tubes, and threw into fires — until they found a way to propel the matter on its own as a rocket, according to our history of early fireworks.
Step-by-step explanation: