When Zhang Yu saw the four old Taoists looking at each other, he seemed to be unable to make up his mind. He looked at Rego's body. He originally planned to let Guan Ying take everyone to Rego's residence first, and then took the opportunity to ask who the gold was given to. Now, it was time to find out the truth about Rego's murder.

After hesitating for a moment, Zhang Yu said, "Since Butler Guan wants to find out the cause of Mr. Lei's death first, I think this is normal. After all, Mr. Lei's body is not cold, so we can't say that he is not clear about his death. Otherwise, let's first see how Mr. Lei died..."

"Aren't it poisoned?" Guan Ying asked.

"That's right, but there are inevitably two problems." Zhang Yu said seriously.

"Which question? Which two questions..." Guan Ying said in confusion.

"Is the poisoned tea that someone forced Mr. Lei to drink it himself?" Zhang Yu said directly.

"This...is really a problem...so how can we tell it..." Guan Ying said.

Zhang Yu stretched, then walked towards the desk, and came to Rego's side.

He then looked at Rego, grabbed Rego's hanging arms, looked at both his left and right hands, and then looked at Rego's collar again.

After checking, Zhang Yu said: "There was no sign of struggle on Rego's body, and it was obviously not a person who forced poison tea to be fed. However, there were traces of tea on Rego's neckline. Although it was possible to spill tea on his own, it was rarely at the neckline. From this, it can be concluded that Rego should have been fed the tea without resistance. In this process, Rego's greatest possibility is that he was already in a coma."

"Mr. Lei was first unconscious and then fed poison tea... How could this be possible... The door of the room was locked and the windows were locked. Who could enter Mr. Lei's room and make Mr. Lei faint first and then feed poison tea..." Guan Ying said with some disbelief.

"The problem lies here... In addition to the possibility I mentioned, there are two other possibilities. One possibility is that someone poisoned the tea in advance and poisoned Mr. Lei to death, and the other possibility is that Mr. Lei committed suicide... But if I said Mr. Lei committed suicide, would you believe it..." Zhang Yu said with a smile.

"Of course I don't believe it!" Guan Ying immediately refused.

"I don't believe it either." "I don't believe it either." Zhu Changzhi and Zhou Qingyun also said.

"That's it, you don't believe it, and I don't believe it. In this way, there are only two possibilities left, one is to poison Mr. Lei and then poison him. These two possibilities are very easy to determine." Zhang Yu said confidently.

"How to judge?" Guan Ying asked.

"I'll ask you first, do you know where Mr. Lei's tea leaves are placed?" Zhang Yu asked.

"It should be in the drawer under the desk..." Guan Ying said.

Zhang Yu immediately turned around and reached out to open the drawer of the desk. There were three drawers under the desk. After pulling the one on the left, he saw a round tea bucket inside.

The tea bucket is made of wood and very delicate, obviously it has been carved. Zhang Yu took out the tea bucket and unscrewed it, and there were tea leaves inside. Zhang Yu followed and said, "If someone poisons it, it must be poisoned in the tea bucket or in the water. So, let's see if there is any poison here."

After saying that, he glanced around and saw a jade cup on the antique stand. He simply took it over, pinched some tea from the tea bucket and put it in. Then he walked to the kettle, picked up the kettle and poured some water into the kettle. After waiting for a while, Zhang Yu took out the silver needle and put it in it.

Everyone's eyes were now concentrated on the silver needle. When Zhang Yu pulled out the silver needle, everyone almost said in unison: "No poison!" "No poison!"...

Zhang Yu shook the silver needle in his hand and said, "There is no poison on the silver needle this time. In other words, the poison in the tea was not put into the tea bucket in advance, but was worn by the murderer. After knocking Mr. Lei unconscious, he put it in the tea and gave it to Mr. Lei to drink it."

"But...if this is true, how did the murderer enter the boss' room..." Guan Ying said in confusion.

"Let's assume first that Butler Guan really has nothing to do with this matter. In this way, the murderer will not be able to walk through the door, but can only walk through the window. If you walk through the window, you first need to knock on the window and ask Rego to open the door on the window before you can come in. In this case, no matter who knocks on the window, Rego will be careful and will never be knocked out easily. It is impossible to even open the window for the other party, including an acquaintance, unless there is an ulterior secret between this person and Rego." Zhang Yu said, walked to the desk and picked up the remote control placed on the table.

Ye Buli had picked up the remote control before and then put it back. After Zhang Yu picked up the remote control, he pressed the button on the window.

The window slowly pushed open outward, and saw that the window was opened like this, Zhang Yu looked at it. He could see that there was a slide under the window, and there was a bracket under the window door. The bracket slowly contracted inward, which made the door open outward.

This is a very simple principle. Nowadays, many windows are designed in this way, and the difference is just manual and automatic. Zhang Yu walked to the window with the remote control, then walked out, observed it around, and looked at it like this one.

Zhang Yu knew who the room on the third floor was, but he still asked deliberately: "Who is the room below Mr. Lei?"

"It's mine." Zhu Changzhi said.

But he seemed to have reacted and hurriedly said, "You don't suspect that I climbed up from below, right... After I met the master, I really left..."

"I didn't say it was you, why are you so nervous..." Zhang Yu said, turning around, holding the remote control, and pressing the button to close the window.

The window door that was open to the outside immediately began to slowly close. Zhang Yu immediately found that there was no handle on the door inside the window, but there was a handle on the door outside the window.

When the window door was completely closed, Zhang Yu reached out and grabbed the handle, but twisted it, but did not unscrew it. On the handle, there was a thin template, which you could tell at a glance that you needed to read the fingerprint.

Zhang Yu put his finger on it, and he didn't want to hear the "Didi" alarm immediately.

Fortunately, he was not a thief, so he pressed the window button with the remote control. It’s true that when the remote control was activated, the alarm sound disappeared immediately.
Chapter completed!