Four greatest invention in Ancient China ep3/4: Paper making

During East Han dynasty (AD105) paper making technique was greatly improved by Lord Cài Lún. This is why the prototype of paper was called Lord Cai Paper. Cai based on the silk waving technique using tree bark, used fishing net, used cloth, and linen etc. as material to make fabric paper which is suitable for writing. Since then the word "paper" mean this particular type of paper making technique.
Well before the Cai paper was invented, the ancient Chinese started using inscriptions on bones or tortoise shells during the Shang Dynasty(3500 yr ago). Until Spring and Autumn warrior nation era, bamboo was used instead of tortoise shells, however, it was still very bulky and hard to carry.
During the West Han dynasty, silk cloth was started being used for writing, and drawing. But it was not popular as silk was very expensive that only affordable by the nobles.