That waist card was the title Lu Yu obtained by killing the Demon Ancestor's incarnation.
On the bronze waist plate, the words "Great Qin Zuo Shu Chang" are clearly engraved.
Lu Yu walked to the side of the barrier without casting any spells. He just held the token and walked forward.
The light curtain was like a lake, with sparkling waves. It seemed that it sensed the waist tag in Lu Yu's hand. After a violent fluctuation, an entrance actually opened.
Lu Yu stepped inside without encountering any obstruction.
"What! He actually went in."
"Is it possible that this barrier cannot be entered using magic power?"
Many monks stepped forward to try, but without exception, they were blocked by the barrier.
The light curtain outside, after Lu Yu was put in, returned to its original appearance and remained unchanged.
"The barrier has not disappeared, but how did Lu Yu get in?"
"Look, after he entered, we couldn't see clearly what was going on inside the hall."
Wei Mengting raised her eyebrows and said, "Perhaps Lu Yu has an unexpected encounter, so he can enter calmly."
Inside the main hall.
Lu Yu broke into it, and suddenly there was a cold wind blowing along the end of the hall.
This should be a library. There are several rows of bookshelves as high as three people nearby, which are piled with bamboo slips.
No one has been in this place for an unknown period of time, and everything is filled with the smell of decay and old age. The ground is covered with a thick layer of dust, but the bookshelf is very strong and has withstood the ravages of thousands of years without aging or decay.
Lu Yu casually took out a bamboo slip and slowly opened it, but was attracted by the contents inside.
It is written in ancient characters. It is a volume of records, probably recording the daily official affairs of the ancient court.
"Shangqing Meng Yi personally led 200,000 sergeants to assist the Great Wall Army."
"The evil spirits are so powerful that they recruit another 500,000 troops from the capital and rush to the Great Wall."
What is written here is all about the scheduling of sergeants in the ancient imperial court.
If you just read these words, you may not notice anything, but Lu Yu traveled through time and space from that ancient era and went to the battlefield in person, so he naturally knew how dangerous the war at the border was.
In the past, Meng Tian died under the siege of countless ancient demons. The scene is still vivid in his mind.
"I don't know if I really changed the past time and space." Lu Yu murmured.
This should have been sorted out by a dedicated person and arranged from far to near according to the passage of time.
Lu Yu flipped through the books very quickly, and in less than a while, he had already read through a row of bookshelves.
Bamboo slips can record very little content, so the contents are concise and comprehensive, and a lot of things can be written in just a few words.
As time goes by, the border war becomes more and more serious.
Almost every other year, the ancient imperial court would recruit a large number of sergeants to join the border battlefields. The Great Wall Legion's annual battle losses reached a terrifying 70%, and a large number of soldiers had to be replaced almost every year.
"Evil demons invaded Beiming County and killed the four people guarding the Martial Saints. The evil demons caused chaos and chaos, and countless people died."
On the second row of bookshelves, the bamboo slips at the beginning of the chapter have already recorded the events of the demons crossing the Great Wall and entering human territory.
It was a chaotic era, where demons were rampant and weak humans were massacred. People with a little strength gathered together and reluctantly fought against the demons.
The battle report was transmitted to the center and then to the Emperor of China during his third eastward tour.
At this moment, countless demons have climbed over the Great Wall and have reached the human territory and are starting to act recklessly. Everywhere is filled with raging flames of war.