Ancient windows were all made of paper. What should I do when it's windy and rainy?

First of all, in the ancient history of China, paper was invented by Cai Lun in the Eastern Han Dynasty. Of course, strictly speaking, Cai Lun has improved the papermaking technology and promoted the popularization of paper. However, before the Tang Dynasty, paper was not widely used in windows. Historically, the original house had no windows. For the ancients, window ventilation and lighting came later. For the material of the window, we chose animal skin and yarn at first, such as screen window. At the same time, for windows in ancient history, windows often sink deeply, leaving a large windowsill.

So through this design, it is obvious that the rain will not easily wash enough paper. Of course, it is impossible to completely avoid rain and snow erosion only by the concave window shape. For this reason, the ancient window paper was generally soaked in oil. In the Tang and Song Dynasties, it was recorded in the "White Hole Six Stickers": "It is very clear to paste the window with peach paper coated with water and oil." For oil-impregnated paper, it is not only not afraid of water, but also can increase the brightness of windows.

Oiled paper is made of tough base paper coated with tung oil or other processed paper made in drying oil. It has folding resistance, waterproof performance, good water absorption, no reflection and no slippage. Oil paper can not only be used as enough paper, but also be used as an oil paper umbrella. As far as the oil-paper umbrella is concerned, it has been used for 1000 years.

Finally, it is often seen in martial arts films that masked men in mysterious clothes pierce the window paper with bamboo tubes and blow poisonous gas indoors to knock people over. No matter how thin the paper is, it is easy to be damaged even if you use sandpaper to paste windows, draw hemp tendons and brush tung oil. Therefore, for wealthy families in ancient history, windows made of oil paper are generally not used, but flower windows inlaid with a lot of Ming tiles are used. Mingwa, which appeared in Song Dynasty, is a translucent decorative material. In Suzhou gardens in Ming and Qing Dynasties, Ming tiles were widely used to make windows. After the late Qing Dynasty, foreign glass began to be imported and gradually replaced Mingwa. By the late Republic of China, Mingwa gradually faded out of people's sight.