Yellow means solemn and elegant, and is the positive color of the five colors. There are many such objects in the Dunhuang stone chamber. In addition to yellow paper, it also produces a variety of other colored papers.

"Xuan Ling Ping is made of green, red, ethereal, green, and peach blossom paper, so that it is extremely fine, and it is made quickly."

"Ye Zhong Ji" cloud: "The edict is written on five-colored paper, in the mouth of the phoenix. The colored paper mentioned here is blue, red, ethereal, green, peach blossom and other colored papers.

Wax Day in December every year, the specific day varies from dynasty to dynasty, and then gradually fixed on December 8 as the wax day, this day is the day of the great sacrifice, the object of sacrifice is the ancestors and the gods, Wax Day is also the day of family reunion.

At that time, there were two types of household registration systems: yellow and white. The yellow register is a formal indigenous household registration, and all indigenous households are registered in the yellow book, which is a general household registration book written on yellow paper, and is the basis for renting and assigning labor.

Water can be stored in the dry season to raise the water level, and the flood season can be carried smoothly. The characteristics of the large difference in water volume in different years and seasons of Yongding River are fully considered. Running east-west, a small reservoir is formed between Siping Mountain and Shijingshan.

In the garden, there are earth mountains, fishing platforms, curved marshes, flying beams, heavy pavilions, etc. At the same time, the stacked rocks and mountains, or the heavy rocks and mountains, the rugged stone roads, or the deep streams and caves, are like nature, which is an example.

In terms of gardening, the scholars advertise the spaciousness and love of nature and wilderness, and in terms of gardening, they gather stones to lead springs, plant forests and open streams, creating a relatively simple and natural artistic conception.

There are more than 30,000 Buddhist temples in the north, including more than 1,000 in Luoyang, which shows the prosperity of Buddhist architecture.

It is generally thicker and heavier, while the north-south paper is slightly thinner than the Han paper, and has obvious curtain lines. The traditional way of papermaking movable curtain bed paper molding. This kind of mold is composed of two parts: a bamboo curtain and a wooden bed frame, and then two side posts are used to make the two close together, which can be closed or detached.

When the two are put together, put the paper in the pulp, remove the bamboo curtain and put the wet paper on it on the wooden board after filtering the water, and then put the two together to carry out the paper, remove the bamboo curtain and put the wet paper on the wet paper that was copied out last time.

This is repeated, and at the end of the stacked wet paper is pressed to remove the water and then dried.

The advantage of this detachable papermaker is that tens of millions of sheets of paper can be continuously copied with the same mold, which improves labor productivity and equipment utilization, and the paper is tight and uniform.

In terms of processing and manufacturing technology, lye cooking and pounding have been strengthened, the quality of paper has been improved, and processed paper such as colored paper, coated paper, and filler paper has appeared.

On the last day of the first lunar month, people come to the water's edge, some boating, some feasting on the water, and some washing their dresses, which is said to be done to ward off disasters and misfortunes.

Later, the significance of eliminating disasters and relieving misfortunes gradually weakened, and swimming in the water and enjoying spring became people's activities.

White linen paper and jute paper used for writing scriptures, leather paper made of wolfskin, rattan paper made of rattan fibers, mulberry root paper made of mulberry bark, straw paper made of straw, etc.

In the north, paper is made from the bark of the Tsubaki tree. Planting oak trees and boiling and peeling the bark is very hard, but it is very profitable. If you can make paper yourself, the benefits will be even greater.

The hemp paper is made of rags, white and inked, good quality and low price, and can be rolled after being written. Silk and Jane are used together, and paper is not enough to completely replace Silk Jane, and fundamental changes have taken place.

Because it can produce a large amount of white, smooth and square paper, there is no need to use expensive silk and bulky slips, and gradually get used to writing on paper, and finally completely eliminate slips. All court recitals are not allowed to use simple sheets, and they are all made of paper.

Although the documents are mostly paper-based, there are still Jane unearthed from time to time, but since the Eastern Jin Dynasty, there are no longer Jane documents, and all are paper. In the past, when writing on slips, pieces of slips were tied up with strips of leather or rope, connected into a long string, and then rolled into a large bundle.

When writing on paper, a piece of paper is glued together with paste, and rolled up into a scroll with a small wooden scroll, so that a roll of paper can hold several large bundles of simple books, which is light and practical.

A book written in a booklet that needs to be lifted by two people can now be easily carried out in a pocket.

It has promoted the rapid increase of books and literature and the dissemination of culture. On the contrary, development requires the creation of more and better paper.

The abundance of writings led to the prevalence of copying, which in turn promoted the development of the art of calligraphy and the change of Chinese characters. Writing on a narrow and hard piece of paper, the pen is limited by the space and texture of the writing material, and cannot be fully used.

But switching to a large, white, smooth, and flexible sheet of paper changed the situation.

Outstanding calligraphers, largely due to the widespread use of paper. The transition from Han Li to Kai Li, and finally the formation of the current regular script, cursive script was also developed, and the change of Chinese character fonts was also caused by the use of paper, because on the paper can be waved as you like, without any restrictions.

Similarly, painting on paper will also receive good artistic results. It is composed of six sheets of paper, and is the earliest surviving painting on paper. Draw a map on paper.

In terms of equipment, inheriting the papermaking technology, there are more movable curtain bed paper molds, with a movable bamboo curtain placed on the frame, thousands of sheets of wet paper can be fished out repeatedly, improving the work efficiency.

It was so strongly promoted that a large number of monasteries, stupas and caves were built, making it the most prominent type of architecture of this period. During the reign of Emperor Wu of Liang, there were more than 500 Buddhist temples and more than 100,000 monks and nuns. Buddhist temples have also been built in all counties of the region.

In addition to using paper to copy subsets of scriptures and histories and public and private documents, the rise of Buddhism and Taoism also consumed a lot of paper. At this time, all parts of the north and south, including ethnic minority areas, established official and private paper mills to make paper from local materials.

In the north, Chang'an, Luoyang, Shanxi, Shandong, Hebei and other places are the center, producing hemp paper, lint paper, and mulberry paper. After the Eastern Jin Dynasty crossed to the south, Jiangnan also developed paper production, in addition to natural color paper, but also produced a variety of color paper, in addition to the use of a single raw material, sometimes the bark fiber and hemp fiber raw materials are mixed to make pulp and paper.

There are many original materials, but they reflect the situation of planting and making paper in the middle and lower reaches of the Yellow River in the north. However, the vast majority of this cultural relics are still hemp paper.

In the sizing technology, the early sizing agent was a vegetable starch, either brushed on the paper surface or mixed into the pulp. This treatment can increase the paper's ability to resist water permeability, block the inter-fiber capillaries, or improve the pulp suspension, which is the earliest sizing paper.

One of the most important achievements in paper processing technology is surface coating technology. In this technique, a fine white mineral powder is evenly applied to the paper with an adhesive and then matted with a stone. In this way, it can not only increase the whiteness and smoothness of the paper surface, but also reduce the light transmittance, so that the paper surface is tight and has good ink absorption.

The white powder is finely crushed, put into water into a suspension, and then boiled with starch and water, and applied to the paper with a row pen, because there are brush marks, and it must be calendered after drying. This type of paper is viewed under a microscope and has clearly visible mineral powder grains between the fibers.

In general, if the paper is written on only one side, it is coated on one side, and the back is still the base paper.

On the fifth day of May in the summer calendar, flying boat racing is a traditional custom in the Duanwu Festival, and there is also the custom of eating zongzi.

On this day, people also make the wormwood they collect into human shapes and hang them on the door, believing that this will ward off the poisonous gas, or soak the calamus grass in wine and drink calamus wine to detoxify.

The technique is dyeing.

In addition to adding to the beauty of the paper, sometimes it has the practical effect of improving the performance of the paper. The most commonly used colored paper is dyed yellow paper, which is widely used in public and private occasions, especially for religious believers to copy Buddhist scriptures and Taoist scriptures.

The dye used to dye yellow is cork, a deciduous tree of the Rutaceae family, also called yellow barberry bark.

Phellodendron has Sichuan cork and Guan cork, its dry skin is yellow, bitter taste, and the gas is slightly fragrant. It has been chemically analyzed to contain alkaloids, mainly junidine. This alkaloid is both a dye and an insect repellent and moth-repellent effect.

This paper can repel insects and moths, prolong the life of books, and have the smell of books. Yellow is not dazzling, and can be read for a long time without hurting the eyes. If there is a clerical error, you can use orpiment to paint and then write, which is convenient for proofreading.

This is where the so-called "letter pen yellow" comes from.

Yi Xue couldn't help but sigh, her heart was full of anticipation.

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