The first thing to do when peeling off the mud is to put it in water to clean the stain.

Ronghua took Chen Han around the workshop.

He clearly saw the staff, soaking the preliminarily cleaned slips in water, and gently brushing off the mud with a wolf quill. Wash away the dirt and leave the word.

"In fact, don't look at the shape of the saturated slip that seems to be intact, but in fact the texture is very fragile, which you know as an archaeologist."

Ronghua pointed to the careful movements of the staff, and sighed a little: "This unearthed water-saturated bamboo slip feels like a baby's skin." ”

"Blow the bomb to break!"

"So when dealing with them, you have to be careful and not sloppy."

"Everyone, if they are proficient, can only clean 5-10 pieces a day."

"This batch of bamboo slips sent by the Institute of Archaeology of the Chinese Academy of Social Sciences, even if we step up processing, it will take three to five days to clean them all up."

Before the words fell, Rong Hua casually picked up a bottle of transparent liquid on the table that was about the same as pure water, and taught Chen Han:

"Don't look at this water, it looks like the pure water used in the lab, but it's not pure water."

"In the past, we would soak the bamboo slips in pure distilled water for cleaning, the purpose is to remove a large number of harmful free particles in the bamboo slips."

"This method has been used for decades and has become a relatively mature process system."

"However, using distilled water is not a perfect practice."

"Distilled water contains a lot of free ions, which can have an erosive effect on bamboo slips."

"And this feature is also one of the reasons for the low repair rate of the early slips."

"It is also thanks to the progress of science and technology that a better immersion liquid, deionized water, was born."

"The emergence of deionized water prevents the ions in the water from damaging the slips to the greatest extent, and greatly improves the repair rate of the slips."

"All the water used in the restoration room is deionized."

Chen Han watched intently as the staff meticulously cleaned up the bamboo slips, and nodded in response to Ronghua.

He is no stranger to deionized water, which is now used in large quantities in the laboratories of many colleges and universities.

As an extremely pure water that removes impurities and various ions from the water, it is naturally more popular in high-precision experiments.

It's just that Chen Han didn't expect that the restoration of bamboo slips also needed deionized water.

It was indeed a lesson.

Chen Han followed Ronghua very humbly, trying his best to understand and learn how to repair bamboo slips.

Although he has a good academic performance in the archaeology major of Peking University, he can be said to be a proper scholar.

But he wasn't there enough to learn God.

During my university career, I only had time to learn about field archaeology, history, and cultural relics identification.

For the field of cultural relics restoration that is related to archaeology but basically out of reach of field archaeology, he has little attainment.

The system that fell from the sky, among the six skill tree judgments given by Chen Han, only the restoration of cultural relics was LV0.

In the field of cultural relics restoration, he is indeed a younger brother.

Ronghua took him and took a complete look at the restoration process of Jian Mu.

After the mud is cleaned in deionized water, it is still oxidized black, and then the second step of the repair of the slip is decolorized.

Decolorization is the use of chemical agents to restore the original color of the simple stub.

During this process, compositionally stable inks are not chemically reduced and the handwriting is still preserved.

It is worth mentioning that the decolorization chemicals currently used in the industry are researched by the Jingzhou Cultural Protection Center.

After the decolorization process, the slip will return to its original yellow color, and all the ink on the slip will be re-revealed.

After the successful decolorization and restoration, the big man in the simple bamboo restorer like Chen Shuren needs to come on the field and start dehydrating the simple bamboo slip.

Dehydration is not too complicated, but it requires experience and staying up late.

The decolorization is filled with water, and direct removal of water will cause the slip to collapse or even break.

Therefore, decolorization is not as simple as drying the moisture of bamboo slips in the oven.

Instead, we have to use the method of chemical substitution to replace the water with ethanol.

Only when ethanol fills the inside of the bamboo slip can it prevent it from deforming due to dehydration.

After the water is replaced, the slips can be put into the drying oven to dry.

And this dryer for drying slips is also specially made, and it needs to run non-stop for nine days and nine nights as soon as it is started.

In order to avoid the temperature fluctuation of the oven and the cracking of the bamboo slips, the bamboo restorer in charge of the dehydration process had to stay in the studio almost all of them.

I can't even sleep properly, and I need to check the thermometer every two hours to make sure that the temperature is not fluctuating.

After more than 200 hours of continuous work, 80% of the humidity of the slip was removed, and the dehydration was completed.

Ronghua took Chen Han to the special "washing Jane" room, and picked up a bamboo slip that had been dehydrated.

At this time, the bamboo slip has turned back to dark yellow, and the ink on the bamboo slip is still clearly visible.

"Decolorization and dehydration, in fact, there is no specific quantitative standard, it can only rely on personal experience and feeling."

Rong Hua waved the bamboo slip in his hand slightly, and in front of Chen Han, he put it into a basin of chemical potion in the washing room.

There's nothing too complicated about the action, and there's no cool scene of scientists exploding with smoke on TV.

He just submerged the bamboo slip in the potion and waved it lightly.

After a few shakes like shabu tripe when eating hot pot, the bamboo slips that were taken out of the potion had already turned into a bright beige.

And the handwriting on the bamboo slips has become extremely clear, as if it had just been written.

"In this way, a water-saturated slip has been repaired."

"If the individual handwriting on the slip is a little too shallow or missing, you can simply add ink to it."

"Then, after a month of natural air drying to stabilize the structure, these bamboo slips can be packed into plexiglass panels and encapsulated for preservation."

Ronghua handed the bamboo slip that had gone through the final "washing Jane" process to Chen Han.

This is a Han Jane, Chen Han clearly saw a line of small seals on the small Jane surface.

"In the fourteenth year, he defeated Han Wei and killed Gongsun Xiyique."

"This is, the bamboo slip that records the battle of Yique?" Chen Han looked at Ronghua with some astonishment.

Ronghua nodded: "This is one of the batch of slips unearthed in the M12 tomb excavated by the Jingzhou Museum in the Hujia grassland at the beginning of this year. ”

"A total of 4,636 bamboo slips and 6 wooden slips have been unearthed from tomb M12, and the overall state of preservation is good."

"We have repaired it so far, and we have almost repaired most of it, and we can determine that this batch of slips is roughly divided into several categories, such as chronology, legal decrees, calendars, medical miscellaneous prescriptions, thin books, and dispatch books."

"Now the batch in the washing room is the age of Jane, about 160 pieces, a total of two groups."

"The one in your hand is the first group that records the major events from the first year of King Zhaoxiang of Qin to the first emperor of Qin, and it is a chronological style, with a column every year."

"The second group is a record of the major events from Qin II to Emperor Wen of the Han Dynasty, which is also a chronological style, and it is a brief one every year."

"The archaeological team of Jingzhou Museum has determined that the burial age of this M12 tomb is not earlier than the first year of Emperor Wen of the Han Dynasty."

"This is a batch of historical documents that are earlier than the historical records!"

"It has important academic value, can be a correct history, a supplementary history, and involves the history of the Han and Wei kingdoms and the Qin state during the Warring States period, which is quite precious."

"These slips condense the wisdom of our ancestors and the history of our nation, and are the source of our cultural self-confidence."

Ronghua put away this bamboo slip very solemnly, and his face was solemn.

"For thousands of years, the reason why our Chinese culture has never been cut off is because of such a unique way of inheritance and continuation!"

"If it weren't for the restoration of these slips, the fog of Chinese history would have been shrouded forever."

"The vivid historical materials of the three kingdoms of Wei, Han and Qin will forever become historical mysteries."

"But we succeeded in repairing these bamboo slips!"

"Try our best to retain the glorious history of China and the inheritance of Chinese culture, and leave cultural self-confidence in the hearts of every Chinese person."

"This is the meaning of the existence of our cultural relics restoration workers!"