The tradition of lighting fireworks off on holidays is still very popular in China. So in 105 A.D., Ts'ai Lun had a great idea, Re mixed together mushy mixture of mulberry bark, hemp, rags and old fish nets. The abacus was an early form of a calculator. A few centuries ago, the European traders came to get the smooth silk from the Chinese. Only the Chinese knew that silk was made from silkworms because they kept the secret to themselves.
Silk is cool in warm weather and warm in cold weather.
The Chinese were the first to use a lodestone which was a magnetic object that could show direction. The Chinese would used it for finding a good place to bury people. The travelers later used it to guide them in the ocean. The lodestone was finally replaced by a magnatized needle. The Chinese were the first people to ever make and fly kites.