Songbai sent the letter to Si Yunlan's hands and left under the pretext of having something, leaving in a hurry.

Si Yunlan, who was left standing at the door with the letter, was confused, but Li Su was not a person without a purpose.

This made him curious about the letters in his hand, but this was not a good place to read them, so he went back to his study, so that he could tell Shuoshan to keep watch outside the door and not let anyone in.

Shuoshan guarded the door as ordered, and after Si Yunlan closed the door, he opened the letter with a curious face, and after seeing the content of the letter, Si Yunlan's face gradually became gloomy.

What was written in this letter was all evidence of the crimes committed by Ding Guogong in Shandong, and he was clearly a thief who had made meritorious efforts to suppress bandits.

The reason why Dingguo Gong was able to take down three bandit villages was because he had a close relationship with the bandits in Heifeng Village, and even the coal mountain handed over to His Majesty, he secretly detained one, and the wolf's ambition was nothing more than that.

Si Yunlan looked at the letter in his hand and sneered, with these evidences, Dingguo Gong was decided.

Si Yunlan folded the letter and put it back away, but he didn't plan to expose him directly with these evidences now, his son had not paid back what he owed Yunting, so he couldn't be cheapened.

The sins they have committed must be counted one by one.

Si Yunlan put the letter away with a gloomy face, just give them some more time, and give them a good time after the people from the Criminal Department went to Shandong to send the news back.

Although he did not participate in Cao Er's case, he was a member of the Criminal Department, and he still knew some of the plans of the Criminal Department.

Li Su knew that Si Yunlan knew his plan without any action after receiving the letter, and he had to say that it was similar to what he thought.

At this time, in the study of the Li Mansion at this moment, Jing Yun was reporting to Li Su on the progress of today's investigation by the Criminal Department.

Li Su is now the secretary of the Criminal Department, and the case of Cao Er is now the most important case for His Majesty, so he naturally needs to supervise and interrogate, but he doesn't need him, the Shangshu, to charge ahead, so he sent Jing Yun to follow him on his behalf.

"Master, after the investigation in the last few days, only one old beggar claimed that he had seen the assassin on the day of the crime, and the people of the criminal department also painted a portrait of the suspect according to the old beggar's words, and the portrait has been posted at the city gate.

The people from the Criminal Department also sent people with portraits to go door to door and ask about them, but unfortunately they found nothing."

Li Su asked, "Old beggar? What about the old beggar?"

Jingyun: "After the question, he left."

"Send at once to the whole city to find this old beggar, and bring him back, whether he lives or dies." Li Su commanded without thinking.

After Jing Yun left, Li Su was the only one left in the study, he sat on the chair with an expressionless face, his fingers tapped lightly on the table, and this was what he looked like when he thought about the problem.

When Songbai returned, he was supposed to come in to restore his life, but when he saw his master's appearance, he left the room lightly and closed the door.

Li Su knew that he had become a scholar at a young age, and he had openly stood opposite the conservative party above the court before, and he had become a thorn in the side of many people.

Since he became the secretary of the Criminal Department, the Criminal Department has not solved any major cases, and the Cao Er case is the key to breaking the situation, and now the eyes of civil and military officials are focused on this case.

Although the death was just a small servant, the murderer was openly provoking the dignity of the imperial court, and the criminal department was determined to win this case.

The reason why he asked Jing Yun to find the old beggar just now was because he suspected that the beggar was a smoke bomb released by the murderer.

Judging from the fact that the murderer dared to kill people in the yamen and could leave calmly when he was ready, we know that he was a bold and careful person who was very cautious, how could such a person let him expose his face when he killed someone.

So this is very likely to be a scene directed and acted by the murderer himself, in order to provide them with wrong clues, so as to get rid of their suspicion and clear themselves, this murderer does have two brushes.

Li Su tapped on the table, what is the relationship between this person and the Dingguo Mansion?

The murderer killed Cao Er at that node, it is difficult to associate otherwise

went to the Dingguo Mansion, so in the past few days, whether it is the Criminal Department, Dali Temple and the Metropolitan Procuratorate, they have all focused on the Dingguo Mansion to solve the case.

It's a pity that the old fox disguised himself too well and returned again and again in vain, but the letter from Shandong was an opportunity.

The reason why he asked Songbai to send the letter to Si Yunlan was that he had obtained it from Shandong, which he had sent for Si Ning, and secondly, he also wanted to see his choice.

No matter how he chooses, he has a countermeasure, if he chooses to expose Dingguo Gong, he is a person from the Criminal Department, which is a good thing for the Criminal Department and for him.

If he chooses not to expose Ding Guogong and continue to investigate the current case, he will not object.

……

Sleeping peacefully, Li Su had a very fragrant dream, and when he woke up, he was lying on the couch and did not get up immediately, and only after calming down a little did he get up and dress.

Because of last night's dream, he got up a little late today, and he was mostly practicing swords at this time on weekdays, but fortunately, there was no court meeting today.

However, because of last night's dream, Li Su's anger was a little big, and the people who were waiting around him all day were cautious, for fear that they would do something bad and provoke the master.

Although the master is not a person who criticizes his subordinates, the subordinates are afraid of him, even if he is gentle and gentle, they are still very afraid.

Guy had a subordinate and a master who had a good temperament, and he couldn't help but be lazy and perfunctory, and the master didn't punish him, but directly ordered someone to sell him.

It's better to beat the subordinates, and the subordinates who were sold by the master's family, where is there any good place to go.

Since then, the subordinates of the Li Mansion have been cautious in doing things, for fear that if they do something wrong, they will end up like that person.

Jing Yun on the other side secretly ordered the master to send people to search for the old beggar in the whole city, but he saw it in the morning, and the people who sent it out did not find the old beggar.

"Jing Guard, I have searched for the places where the beggars gathered, and I took my brothers to look for them, but I didn't find any trace of the old beggar."

"Yes, Guard Jing, I also took someone to ask the other beggars, and they all said that the old beggar had been missing for several days."

"Gone?" Jing Yun frowned, the old beggar really had a problem.

Jingyun: "You send people to continue in the city, and I will take people to take a look outside the city."

"Okay, then there's the Lao Jing guard."

After Jingyun finished explaining, he took people away directly.

Leaving the two people who had just reported standing in place, Zhou You and Ma Chao glanced at each other, their eyes full of helplessness.

This person hasn't been in the city for a few days, who knows where the person has gone, where are they going to find this needle in a haystack?