"Of course I don't believe you." Yang Xuan looked at them and said seriously, "I mean, if this thing is placed in a place we can't think of when we see it?"

"What do you mean?" Yin Ling was stunned by what Yang Xuan said and asked puzzled.

Yang Xuan smiled and raised his finger in the direction of the gate.

"Yes, I forgot this." Silver spirit clapped his head and suddenly realized.

But Yu Qingcheng looked at the direction of Yang Xuan's fingers and said with a confused face: "ah? Where?"

"We went through the whole backyard of the tavern and almost tore down the wall. There is a room here that none of us have looked for." Yang Xuan explained to Yu Qingcheng.

Yu Qingcheng's eyes lit up. Reaction.

Yes, the three acted separately, and indeed turned the whole tavern upside down, but they missed only one place, the hall of the tavern.

The four returned to the hall and looked around.

Yesterday, Wangfu really left in a hurry. The tables, chairs and benches in the hall were not cleaned up. There is also a counter in the hall where the shopkeeper collects money. However, Wang Fu, the shopkeeper of Anye tavern, seems to have hired someone else, so he is not the one sitting in front of the counter on weekdays.

On the counter table, there is an open book, which records yesterday's income. This is the account book of the tavern. Generally speaking, it will be changed once a month.

Yang Xuan picked up the account book and turned it over a few times. He didn't find anything unusual. His eyes turned to the bottom of the counter, where there were several small cabinets.

Yang Xuan opened the cabinet and a row of books with animal skins as covers appeared in front of Yang Xuan. The spine of these books recorded the year and month of this account book.

It can be calculated from the number of books that anyo tavern has been open here for about ten years. There are more than 100 books here. Every twelve books are stacked together. From top to bottom, it is the account book from the end of the year to the beginning of the year.

Although these thick account books look no different, there has been a thick layer of ash on the books in previous years. But in this pile of account books, Yang Xuan keenly found a different account book.

From the spine of the book, this account book was two years ago, and a layer of ash has fallen on the account book stacked with it, but the cover of this book alone is still very bright, which is obviously because people often open it.

"I found it." Yang Xuan shouted excitedly when he saw the discovery.

He reached out and picked up the account book. It was really different from other accounts. Although the outer cover was brand-new, you could clearly see that the paper inside had been folded. Obviously, only when someone often looks through this account book can this happen.

Yin Ling and Yu Qingcheng hurried together when they heard the speech. Yang Xuan told the two about the process of discovering the account book, and then spread the account book on the table.

Sure enough, what is recorded in this account book is not the revenue account of any pub, but all kinds of things.

Connecting these things together, Yang Xuan also found a shocking secret.

"In February 602, Qingli asked the devil for three 'twelve' and one 'nine'."

"In March 602 of Qingli, the devil sent three 'twelve' and three 'nine'."

"What does that mean?" Yu Qingcheng looked at the information recorded in the account book and asked puzzled. But Yang Xuan and Yin Ling did look at each other, and their eyes were full of surprises.

This is a great discovery.

This year is the 603 year of Qingli, that is, it happened a year ago. Although I don't know what the devil is written on it, Yang Xuan is very familiar with the seemingly confusing "twelve" and "Nine".

In the dungeon of Xuanwu Pavilion, the same number was recorded on the book that Yang Xuan and Xuanyu found together, from one row to twenty-seven. These 27 numbers represent 27 kinds of monsters that ordinary people have never heard of or seen.

The "twelve" and "Nine" written here are obviously two of them. After the six monsters were sent, Wang Fu also sent them to Liu Yunzhi.

The crowd continued to look down to find more clues.

Suddenly, Yinling screamed, stretched out a finger and pressed on one of the messages.

"In May 603, the mission failed, and the failed products were sent back to the devil."

"In May 603 of Qingli, Liu Yunzhi asked the devil to send someone to kill him."

"In May 603 of the Qing calendar, the Lord of Xuanwu Pavilion revived and asked for cancellation. Liu Yunzhi was destroyed by the Lord of Xuanwu Pavilion."

"In July 603 of Qingli, Liu Yunzhi was dead, and the failed products could not be retrieved. Retreat and return to the devil."

Seeing these points pointed out by Yin Ling, Yang Xuan immediately frowned. He could feel that he could vaguely guess that this account book was specially left by Wangfu.

This made Yang Xuan feel a thrill. It was July now, and may was two months ago. In other words, two months ago, Wangfu had decided to solve Liu Yunzhi, and they chose a way that would never expose themselves.

But what surprised Yang Xuan was why Wangfu, who was still in chaos at that time, knew about the northern region.

In addition, there is this organization called the devil of heaven, and who is sacred. Under the control of Wangfu, Liu Yunzhi made such a dehumanizing thing, which is obviously the meaning of this demon. But there is no record of their purpose, and there is no mention of how the mission failed.

This kind of doubt lingered in Yang Xuan's mind and made him puzzled. But anyway, I've got some clues now.

"Where shall we start now?" Yang Xuan looked up at Yin Ling, but from the expression of Yin Ling, she seemed to know these things.

The silver spirit thought for a moment and said, "I know that this force called the heavenly devil is behind all this. As long as you know what it is and where it is, you may be able to solve the mystery."

"But do you know how to find the devil?" Yang Xuan asked curiously.

Yin Ling shook his head, but mysteriously said to Yang Xuan, "don't worry, this thing has started more than ten years ago, and my hands have already mastered some information about people related to Wangfu. As long as I find them, I may be able to get something about this demon from their mouth."

She said with an excited expression on her face, as if she had uncovered everything. But Yang Xuan's eyebrows were still tight, because he had a feeling that there must be some conspiracy behind this matter.