What paper was used for the ancient paper window?

Oil paper is a kind of waterproof paper. In ancient times, there were few measures to prevent water. Among them, vegetable oil that can be manufactured artificially, that is, tung oil, is the most widely used. Window paper soaked in tung oil has a strong waterproof effect. Moreover, the thickness of enough paper processed by this process is very thick, so it has the function of waterproof, moisture-proof and even moth-proof.

Other functions of oil paper

Oil-paper umbrella is one of the traditional handicrafts of Han nationality. As a kind of paper umbrella or cloth umbrella which originated in China, it has also spread to Japan, Korea, Vietnam, Ryukyu, Thailand, Laos and other parts of Asia, where oil-paper umbrellas with local characteristics have been developed. With the migration of Chinese mainland Hakkas to Taiwan Province Province, China Oil Paper Umbrella took root and developed in Taiwan Province Province.

Oil-paper umbrella is not only a daily necessities for sun protection and rain protection, but also an indispensable item in wedding etiquette. In traditional Chinese weddings, when the bride gets off the sedan chair, the matchmaker will cover her with a red oiled paper umbrella.

At a traditional Japanese wedding, the bride will be covered with a red oiled paper umbrella. Oil-paper umbrellas were also used in ancient Ryukyu weddings. Old people like purple umbrellas symbolizing longevity, and white umbrellas should be used for funerals. Traditional Japanese dances also use oil-paper umbrellas as props, and some tea ceremony performances use "fan umbrellas".