Printing books? The original intention is really to put the book in the sun. There is a saying:? Tanabata is coming, and the sun is shining. Just dry books and clothes. ? On the seventh day of the seventh lunar month, the sun is shining, but it is not too hot. The ultraviolet rays contained in sunlight have bactericidal effect, which is a good time to dry books and clothes. Printed books were recorded in the Eastern Han Dynasty. At that time, the ancient book "Four Moon Orders" had a specific description of book drying: On July 7th, I dried my classics and clothes, and I didn't smoke. ? In ancient times, the paper used for thread-bound books didn't have as many additives as it does now. At that time, most of them were natural wood pulp, cotton pulp and straw pulp, which were easily eaten by insects. So put the book in the sun, kill the moths in the book with strong ultraviolet rays, and prevent the high temperature in summer from breeding mold.
But then what? Printing books? Gradually, it has other meanings. Shi Shuo Xin Yu once recorded such a story: there was a scholar in Jin Dynasty. On July 7, when the rich man was basking in bright and gorgeous clothes and expensive property in the outdoor sunshine, he simply took off his belt and showed his belly? Sun? . When someone asked him when he would do it, he always calmly replied that I would do it! But in fact, this is actually a ridiculous irony. At that time, people printed books not for mildew, but for comparison.
Slowly, the tradition of printing books continued to the Han and Tang dynasties, and gradually formed a forming system. In the Northern Song Dynasty, a unique collection of books was formed. At this time, printed books became an important part of literati's cultural life.
The tradition of printing books is an important part of China's book culture, which occupies an important position in the minds of China literati and is full of China people's deep feelings for China culture.