The so-called Caesar shift cipher is to scramble one or more characters in a few positions in the original order according to the 26-digit English alphabet to form a new English alphabet.

Caesar's shift code is actually similar to the Morse code, and they both need a secret key to decrypt it.

DEFGHIJKLMNOPQRSTUVWXYZABC, is the secret key, then, according to the secret key, 3,26,6,3,12,18 in 3,26,6,3,12,18 is FC, Fang Yi?

6.3.12.18......

I found it......

After my name, Fang Yuan wrote the letter handed to me in English.

I sat in the office hall of the special case team for three hours, and for these three hours, I had been annotating Fang Yuan's letter, and after three hours, I slowly stretched my waist and filled my notebook with full English words.

Immediately afterward, I took another ten minutes to glance at the letter in my hand.

But when I saw it halfway, I was stunned, what did Fang Yuan write in the letter......? How so?

"Fang Yi, I found out that your father Fang Zongyang did disappear after the encirclement and suppression of the Xuanyin Gate twenty years ago, if you want to find Fang Zongyang, you must first find the Xuanyin Zhenren who escaped with a stand-in back then, he is the same as your father, he is not dead, I think, your father has been lurking for so many years, it should be to find this Xuanyin Zhenren and bring him to justice, it has been the third day since he came to Dongshi, I found some breathtaking things, that is, Xuanyin Zhenren should be the demon that your father tracked down back then......”

This news instantly made me feel empowered, Xuanyin Zhenren is not dead? Moreover, not only is he not dead, Xuanyin Zhenren is ...... Or the demon that my father was investigating?

No wonder, no wonder my father wants to meddle in the affairs of the Xuanyin Gate, it turns out that the boss behind the Xuanyin Gate is the demon.

"Old Fang, I have already written the closing report, and Shen Fanming has also sent it back, but because Shen Fanming shielded his son before, maybe the prosecution will prosecute him. At this time, Li Yan came from outside, still holding a closing report in his hand, and after walking up to me in a hurry, he directly handed me the closing report.

I took one look, there was no problem, and I put it on the table.

"Li Yan, I just came back from the General Bureau, Lou Mingli said...... Something happened to Fang Yuan, and he might not be able to come back for the time being......"

In the entire special case team, if you say that you have the best relationship with Li Yan, it may only be Fang Yuan, before I came here, Li Yan had been following Fang Yuan for a long time, this time, after learning the news of Fang Yuan's disappearance, Li Yan was stunned, and then took my hand, saying what does it mean that I can't come back for the time being, and keeps asking me what happened to Fang Yuan.

I glanced at him and asked him to call Su Mian to Fang Yuan's office, and then told the two of them everything that Lou Mingli and Mu Xianyao had told me.

Not surprisingly, they all showed an incredible expression, yes, before that, I also felt that Fang Yuan was omnipotent, there seemed to be nothing in this world that he couldn't solve, but this time, if Fang Yuan still had personal freedom now, he would definitely come back, but he didn't, so he must have been tied up by something or someone.

"So, have you decided, do you want to go to the East City with me and find out Fang Yuan?" I looked at Li Yan and Su Mian and said in a low voice.

Twenty years ago, in order to encircle and suppress Xuanyinmen, the police sent more than ten undercover agents to infiltrate Xuanyinmen, which was also the last time they saw their superiors.

It was the same last time, I almost died at the hands of Xuanyin Gate, so this time, I can't guarantee that I can find out Fang Yuan, nor can I guarantee that we can all come back alive, Lou Mingli said very clearly, we go this time, we can't startle the snake, we can only investigate secretly.

This secret investigation is already very intriguing, and what he means is not only for us to find Fang Yuan, but also for us to break into the inside of the Xuanyin Sect and completely exterminate this cult that has existed for more than 20 years.

Therefore, compared to the murder cases we investigated before, this task is fatal, Li Yan's character is unstable, and Su Mian is too weak, it is okay when investigating the case, but it is very difficult to sneak into the Xuanyin Gate.

Coupled with the fact that I had also met with Rose, I was killing myself with this face on my face.

After a few seconds, Su Mian and Li Yan nodded at the same time, saying that they will follow me, even if they die, we will die together.

"Hey, this kind of desperate thing, how can I be missing?" Suddenly, Lin Yu's voice floated from outside the door, and I looked up to see that Lin Yu, this kid, actually slowly pushed open the door of Fang Yuan's office, he crossed his arms, smiled at me righteously, and said that he would also follow us.

I smiled, then raised my eyebrows and said, "What's the matter, aren't you afraid of dying?"

"Cut, I'm bored, I want to go to East City to have fun, what's the matter?"

I didn't speak, just slowly looked at Lin Yu's small eyes, and smiled meaningfully.

I don't know how many roundworms this kid has, he has been asking me recently when I can join the special case team, and my ears are about to get calloused, this mission, if he also participates, when the time comes, he will come back to reward his merits, maybe he will be granted permission to enter the special case team, however, Lin Yu does not seem to realize the danger of this mission.

But that's fine, Su Mian, Li Yan, me, Lin Yu, the four of them are no more, no less, after all, Lin Yu is a kid, and there are still a lot of ghost ideas.

That night, after I sent Li Yan and them home, I didn't go home directly, but came to the Rose Bar to find Li Tong, and when Li Tong heard that we were going to leave Dongshi tomorrow, she didn't react much, just asked me if I needed help.

I smiled at Li Tong, then pulled him into my arms, looked down at Li Tong, and said slowly: "What do you say, if I don't want to ask you for help, will I come here?"

Immediately afterwards, Li Tong pushed me away, put a bottle of red wine in front of me, and said with a smile that if I finish this bottle of wine, she will help me for free.

I was slightly stunned, to be honest, I can't drink enough, but Li Tong is a woman who generally does what she says, if I don't drink this wine, she may refuse me at a sky-high price, so, in desperation, I can only open the wine bottle and pour this bottle of red wine directly.

After drinking this bottle of red wine, my whole body was about to explode, what the hell is this, vinegar, how can it be so sour.

"Is it good?" asked Li Tong as he squinted at me.

I blushed, then nodded, and said, "Now, you can always help me, right?"

"Well, before I help you, I may, and want to give you a gift. ”

"Bang Bang Bang"

After a burst of clapping, the door slowly opened, and a man in a dark suit and a mirror mask suddenly appeared outside the door.

After seeing this person, I immediately frowned slightly, and said in surprise: "Shen Tufan?"

"See each other again?"

Shen Tufan walked into the private room and slowly took off his mask, but I was surprised to find that there was an extra scar on his face.

"What's the matter with your scar?" I asked slowly, looking up at Shen Tu.

The latter shrugged his shoulders and said that it fell last month, and he didn't seem to want to say much about this scar, but just walked to my side and sat down, and asked me if the purpose of going to Dongshi this time was to encircle and suppress Xuanyin Gate.

I pursed my lips, nodded and said: "Yes, Fang Yuan disappeared in Dongshi, and he disappeared during the investigation of Xuanyin Gate, so the mission of our special case team this time is to infiltrate Xuanyin Gate, first, to find Fang Yuan, and secondly, the religious department has recently received a lot of reports, saying that the harmful Xuanyin Gate appeared again twenty years ago, so the matter of Xuanyin Gate has now been put on the table, this cult, we have to investigate." ”

Listening to my words, Shen Tu glanced at Li Tong, then shook his head and said: "Xuanyin Gate is not as simple as we thought, there have been many cases in Dongshi recently, and I think Li Tong has also heard of it." ”

The latter nodded and said: "Well, now Xuanyinmen is still an organization under the East Market, but the number has increased from the original three hundred to more than a thousand, two weeks ago, there was a nursery rhyme in the East Market, which was sung like this, Xuanyin Gate, Xuanyin Sect, tend to be auspicious and avoid evil ghosts, and little ghosts come to the Holy Maiden to remove ......."

I was slightly stunned and asked what that meant.

Shen Tu smiled and said that there are two explanations for this sentence, first, relying on the Xuanyin Gate, you can avoid evil, if there is anything bad, the holy woman will come out without trouble.

Second, it is a deeper meaning, ghosts are the most feared things in people's hearts, such as Fu Hui in the case you investigated before, it is the ghost in Shen Qingyue's heart, such as the wind housekeeper, it is the ghost in Xie Wenhao's heart, plus the latter sentence, the saint will help you solve it, understand?