! High score reward! How does white A4 paper get old and yellow? It just feels like a long time ago.

Turning white A4 paper old and yellow is old. There are many ways to do it, such as chemical etching, burning, boiling and heating, leaching of deep underground soil and so on. Mostly used to defraud tourist souvenirs and cultural relics. Unlike cultural relics restoration.

First, the smoking method, prepare the paper, hang the paper in a relatively closed room, and smoke the new paper with coconut shells. At this time, the paper will show a faint brown color;

And if you want to make the paper "tired" (that is, the paper is aging due to years), you need to brush it gently with dilute sulfuric acid. Because sulfuric acid is colorless and tasteless, the treated paper looks the same as the base paper. Two months later, due to the action of sulfuric acid, the paper surface was carbonized.

Secondly, the "lead prevention" method of white pigment and the "old treatment method" of inkpad are all "scientific methods".

Thirdly, painting the background color is a simple and easy method. First, use traditional Chinese painting pigments to make the paper color you want as thin as possible, and then brush it evenly on the rice paper layer by layer. After each layer is dried, brush the second layer.

This method is more suitable for familiar publicity. Because raw rice paper is easy to leave watermark, it is suggested to hang raw rice paper vertically and spray colored water on the paper with a watering can.

Extended data

Old-fashioned jade is usually used on antique jade, with the purpose of making the jade surface look old, making its surface more similar and closer to the era of imitation.

There are many ways to do this, such as chemical etching, incineration, boiling and heating, leaching of deep underground soil and so on. Mostly used to defraud tourist souvenirs and cultural relics. Unlike cultural relics restoration. Do some old classifications, such as calligraphy and painting, bronze ware, porcelain, jade and so on. In addition, movies, plays, etc. Also use this method to make old props.

Reference Source Papers Old _ Baidu Encyclopedia