造纸术是中国古代的四大发明之一。东汉时的蔡伦总结西汉以来用麻质纤维造纸的经验,利用树皮、碎布、麻头、旧渔网等原料,并通过先进技术,制出优质的纸张。这种造纸术很快推广到全国各地,后又传遍了五大洲。造纸术的发明与推广,大大促进了世界科学文化的传播和交流。1957年5月, Papermaking is one of the four great inventions in ancient China. In the Eastern Han Dynasty, Cai Lun summed up the experience of using hemp fiber since the Western Han Dynasty to make high quality paper through the use of raw materials such as bark, rags, taro, old fishing nets and other advanced technologies. This papermaking technique was quickly extended to all parts of the country and spread to five continents. The invention and promotion of papermaking greatly promoted the dissemination and exchange of the world's science and culture. May 1957,