Prepare two pieces of square colored paper. Fold a piece of colored paper into the shape of a box. Cut the remaining one into two strips with different widths. Cut a part of the wide strip from the middle, which is exactly the width of the narrow strip. Draw decorations, (be a good person and stick him together) and then insert these two.
Knowledge expansion:
Paper, also known as felt paper, is made of raw materials containing plant fibers through pulping, modulation, papermaking, processing and other technological processes, and can be used for writing pictures, printing books and newspapers, packaging and so on. Unlike bamboo, bamboo is the "silk" of animal fiber. Paper that can be folded at will for writing.
Paper is the carrier of writing and printing, and can also be used for packaging, sanitation and other purposes, such as printing paper, carbon paper, toilet paper, facial paper and so on. Due to the invention and popularization of paper, people can no longer record words or pictures with mud, stone, wood, pottery, metal and other materials, and a large number of ancient information can be spread and preserved.
Paper: the general term for paper. Paper is counted by sheets, so paper is generally divided into: letterpress printing paper, newsprint, offset printing paper, coated paper, book cover paper, Bible paper, copy paper, paperboard, rice paper, papyrus and so on.
According to Ye Fan's Book of the Later Han Dynasty, "Cai Lun, with respect, is also a native of Guiyang. ..... Since ancient times, many books and deeds have been made of bamboo slips, and those with silk books are called' paper'. Expensive and simple, inconvenient for people. Lennart created this idea, using bark, hemp head, our cloth and fishing nets as paper. In the first year of Yuanxing, play it. The emperor is good at his ability, so he always uses it, so the world is salty and called Cai Hou paper. "
This is the earliest record of papermaking in historical documents. As can be seen from the records, the raw materials used for papermaking in Cai Lun are low-priced materials such as bark, hemp head, old cloth and fishing net. Therefore, the paper made by this method has low cost and can be popularized and applied soon. But before some documents recorded Cai Lun, there were examples of using paper.
For example, the case of wrapping medicine with paper in the 2nd century BC was recorded in the book Han Shu Biography of consorts and Filial Piety as Empress Zhao by Ban Gu, and the story of three ancient people by Zhang Shu in the Qing Dynasty.
In particular, the paper of the Western Han Dynasty unearthed in Fangmatan, Tianshui, Gansu, the beacon tower site in Maquanwan, Dunhuang, and the post office site in Hanxuanquan, Ganquan, Dunhuang since the beginning of this century have been proved by existing physical objects that paper was used in the Western Han Dynasty long before Cai Lun invented papermaking. This is about 170 years before Cai Lun invented papermaking.
As can be seen from the above, paper was invented as early as the Western Han Dynasty, when the quality of paper was very poor. It could not be used for writing, and the quality of paper was not improved until the late Western Han Dynasty.
On the basis of this paper-making technology, Cai Lun improved the raw materials and technology, and produced high-quality paper. In particular, Cai Lun has expanded the raw materials for papermaking, providing conditions for the extensive use of various plant fibers for papermaking in the future.