When Chen Yingjie and Luo Nan looked at each other, Chen Yingjie found that the other party's cold eyes didn't seem to be about to explain anything. Chen Yingjie understood everything, including Sherlock's intentions, and what was the sense of disobedience when she went to Luo Nan's room before.

Chen Yingjie's question Luo Nan didn't answer, the two just looked at each other like this, Lin Xi and Yan Wu may still be a little incomprehensible, the dazed faces are obvious, but they don't dare to ask Luo Nan, because this person's eyes are too cold.

At this time, Sherlock happened to appear, and together with Watson, everyone began to look at him again, including Luo Nan, who had been silent and did not speak, slowly turning his head, his emotions did not fluctuate, and his eyes were condensed.

"Just now I asked Watson to change the order of the house number on the third floor, although it is still in order, but 301 and 201 are staggered, which means that now 201 is above 306."

Sherlock explained what he had asked Watson to do, and these people began to understand a little, and they understood more and more, and they stared at one person more and more, and they all looked surprised.

"Then let me explain, the whole method of this case, hmph, is really exquisite."

Sherlock wanted to laugh as he spoke, but the simplicity of the principle was hidden from everyone but himself. If you don't come to this temple today, you can't be sure what will happen to these friendly friends.

When Sherlock said this, everyone became as if they were listening to a book, and they wanted to know how the murderer had done such a killing.

Sherlock reached for Watson to get the keyring, then pulled the key out of the door of 301 and showed it to everyone.

"The design of this key ring is actually very brain-dead, and the easier way is to mark the room number directly on the key, but the designer didn't know how to think rigidly, and all the house numbers were marked in order on the ring, so the result is that the key with the same appearance is easy to confuse, but fortunately, the key is a little troublesome to remove, so you can use which key to go to, and you can barely make mistakes."

Sherlock explained the design of the key to the group, which they all knew, and Sherlock didn't stay long, and then began to explain again.

"Before entering the temple, the two of them explored as pioneers, and it happened that these two people had the opportunity to manipulate the key."

While Sherlock was explaining, Watson helped him gather all the keys, leaving only one key to 201 unhung on it. Sherlock took the key, and then fastened the rest of them to the ring one by one, and it took a while, and it was a delicate work, and Sherlock who fastened it all on it ignited a sense of accomplishment.

"That's all the keys, they're all on it, they're exactly the same, assuming they correspond to different rooms. There is no problem with the key on the second floor, that is, the key of 201 corresponds to 201, and 202 corresponds to 202. But the third floor is different, all staggered by one bit, 306 corresponds to 301, 301 corresponds to 302, and so on. At that time, it was actually Luo Nan who got the 306 key, right?"

Sherlock asked Luo Nan with bad intentions, but Luo Nan was not so easily fooled.

"I don't know what you're talking about, but I took it casually, and someone testified to this."

Luo Nan said and looked at Yan Wu, meaning, can you testify for me? But unfortunately, Yan Wu replied with silence, and Luo Nan became a little annoyed and angry, and yelled at her excitedly.

"Didn't you see it! I chose it at random!"

Her cries go unanswered, but Sherlock is willing to believe her.

"I'm sure she'll be able to testify to this, and you did choose it at will."

Sherlock calmed her excitement and then added, causing Ronan to laugh.

"But you have the choice to dominate them."

"Will they listen to me? Ridiculous."

The quiet Luo Nan made such an expression was really a bit sickly, and Sherlock felt a little sad, but one yard to another, he had to continue.

"They won't listen to you, but you know what they're going to do. First of all, Chen Yingjie and Lin Xi will definitely occupy the second floor and live separately, you know Chen Yingjie. Then there are two rooms left on the second floor, which can be you and Jiang Wentai, it may be you and Yan Wu, or Yan Wu and Jiang Wentai, in mathematics, this has three possibilities. This is very dominant, Yan Wu is afraid of the dark, but she may also endure the humiliation and go to the third floor, in order to avoid this situation, you pretend to be angry for Yan Wu, let her stay on the second floor with gratitude to you, then only Jiang Wentai is left, this time is for balance and harmony or something...... This kind of name is similar to righteousness, and sure enough, the thoughtful Jiang Wentai decided to stay on the second floor, so you naturally went to the third floor, as for the room you chose in front of Jiang Wentai, what does this mean? Jiang Wentai clearly only has 201 to live in, you choose 306, the actual 301 is just above 201, just enough to kill."

Although Sherlock's is reasonable, there is no basis, and Chen Yingjie and Lin Xi's sense of disobedience cannot be regarded as conclusive evidence, so Luo Nan doesn't have to pay attention to Sherlock's whimsy.

Seeing Luo Nan's disdainful face, Sherlock was not shocked or impatient, and continued to speak in an unhurried tone.

"In order to make sure that everyone thinks that you live in 306, you changed the house number in turn before the killing, just at this time Chen Yingjie went to look for you once, although it was a little thrilling, but fortunately there was no exposure, after Chen Yingjie left, you killed Jiang Wentai, and also took advantage of the situation to place the keys on the key ring of Jiang Wentai's room in the correct order, take away the real 306 key, move to the real 306, and restore the house number, so that you don't know it......

"Wait."

As Sherlock spoke, Ronan interrupted him, and looked confident.

"You said that I returned the key to the real 301 and took the key to the real 306, so when I go back to the real 301, there is no key, how can I lock it? You know, 301 next door is locked."

Luo Nan's words Chen Yingjie instantly understood, and clapped her hands in surprise.

"It's a bug! If you don't have a key, how can you lock it?"

"Really?"

Sherlock smiled and asked Luo Nan, this reaction was a bit low-level, and Luo Nan felt very uncomfortable.

With a large bunch of keys in his hand, Sherlock turned around and walked out the door, saying something casually.

"Follow me."

The people behind hurriedly stepped forward, but Luo Nan was a little sluggish, she stared at Sherlock's back, and always felt that he would turn back to herself and smile and say.

"Let's see what 301 looks like no one has lived in before."