The leader of Hu Yiwei took the letter taken out by Lu Buwei. After thinking about it, he couldn't help but ask: "I dare to ask Wu Chengjun, in this letter..."

Lu Buwei interrupted the leader of Hu Yiwei: "You don't need to know about this matter, just bring the letter to Handan."

The leader of Hu Yiwei was silent for a moment, then stood up: "I immediately sent someone to send this letter to Handan as fast as possible. If Wu Chengjun had nothing else to do, then I will take it back first."

Lu Buwei nodded. The leader of Hu Yiwei walked to the wall, and a secret door suddenly appeared, and the leader of Hu Yiwei quickly disappeared.

Lu Buwei looked at the figure of the leader of Hu Yiwei leaving, and the worrying expression between his eyebrows did not disappear because of this.

In the letter I just brought, it actually contained a request from Lu Buwei.

Lu Buwei hopes that Zhao State can choose Qin State as its next target in its attack next year!

As long as the battle to destroy Qin broke out, the Qin State would have to devote all its energy to fighting the Zhao army.

At that time, no one will have the heart to pursue any internal response or not.

And in this way, Lu Buwei can end this fearful undercover life and officially become a minister of Zhao.

When Lu Buwei thought about it, he realized that he had been undercover in Qin for almost ten years before he knew it.

Ten years, how many decades can life be?

It's time to end.

However, Lu Buwei was not very sure in his heart whether the King of Zhao, who was far away in Handan, would have really chosen Qin as the first target of attack because of his letter.

Lu Buwei also made up his mind that if it really didn't work, he would have to run away first.

Fortunately, due to the current situation, it is actually not too difficult to escape.

Lu Buwei did not need to escape east, but just fled north to the Longdong Plateau.

There was the territory of the people of Zhao, with omnipresent Yiqu cavalry wandering.

But of course Lu Buwei was unwilling to leave like this. If he ran away now, Lu Buwei would be an unsuccessful spy, which would greatly reduce his efforts in the past ten years.

If Qin State is destroyed, then Lu Buwei will be a great hero who has made great contributions and a person who played a key role in the battle to destroy Qin.

The importance of this is enough to make Lu Buwei take a gamble.

Just bet that internal agent really committed to surrendering to Zhao State and would not confess because of Cai Ze's interrogation.

He also bet that even if the inner supporter confessed, Lu Buwei could get the news one step ahead and run away.

As long as any of these two possibilities succeeds, then Lu Buwei will at least be worried about his life.

But this kind of chip that uses his own life as a bet is really too exciting, so that Lu Buwei was quite confused when he sat in the study for a long time and didn't even want to eat dinner.

So Lu Buwei didn't know that some other things actually happened in Xianyang City, which was covered with heavy snow.

Cai Ze stood in the heavy snow, surrounded by an encirclement composed of one hundred fully armed elite Qin imperial guards.

And in the center of the encirclement, three Qin Ruishi stood there quietly.

Several corpses were lying on the ground. Cai Ze glanced roughly and found that several people inside were wearing Qin Ruishi's costumes.

"How is it?" Cai Ze asked in a deep voice.

A Qin Ruishi bowed to Cai Ze and replied: "All personnel have been killed, but the other party is quite skilled in martial arts, so we have paid some price."

This price is actually very heavy, with only three of the ten Qin Ruishis left.

Cai Ze nodded and said, "Thank you for your hard work. Isn't you escaped by the people of Zhao?"

The Qin Ruishi frowned, obviously dissatisfied with Cai Ze's method of asking twice in a row: "Everyone has been killed, Gang Chengjun."

Cai Ze then showed a smile on his face and said in a deep voice: "Are you sure these people came out of Lu Buwei's mansion?"

Qin Ruishi did not speak, but took out a letter and put it in Cai Ze's hand: "This letter was found from the arms of the leader."

Cai Ze looked at the letter in his hand and finally smiled, and he looked relieved.

In fact, the so-called Zhao domestic response is simply fake.

From Cai Ze's own perspective, from the moment he accepted this task, he was very sure that Lu Buwei must be the guy who was in the enemy country.

But the problem is that, with the experience of this intelligence leader who has been rooted in Qin for so many years, he has not been able to seize the handle of Lu Buwei. Lu Buwei's meticulousness in this matter can be imagined.

After several months of investigation, Cai Ze discovered something, that is, due to the passing of time and the chaos of war, it was really too difficult to obtain evidence.

Cai Ze even suggested that King Chu of Qin first arrest Lu Buwei before saying that as long as the person arrested him and searched the mansion and interrogated all the people in the mansion, the case would definitely be revealed.

However, Cai Ze's suggestion was rejected very directly by King Chu of Qin.

After all, Lu Buwei and King and Chu of Qin were friends in distress, and Lu Buwei was still a very kind person to King and Chu of Qin. Therefore, even though King and Chu of Qin had doubts about Lü Buwei, they were still unwilling to arrest and imprison without any evidence to prove Lu Buwei's rebellion.

On the other hand, King Chu of Qin was resentful of this matter and asked Cai Ze to find a way to find out as soon as possible.

Under such a passive situation, Cai Ze finally thought of a plan to alert the enemy.

Cai Ze found a way to fabricate a situation in Zhao's domestic response, and secretly leaked the news to Lu Buwei through an insider who had been exposed by Cai Ze's side.

Cai Ze believed that as long as Lu Buwei heard the news, he would definitely react because of panic.

No matter what reaction Lu Buwei reacts, Cai Ze has the opportunity to capture Lu Buwei's foot.

It turns out that Cai Ze's plan has succeeded.

Cai Ze carefully put the letter in his arms and continued to ask: "Are there any other discoveries?"

"It's gone."

Cai Ze pondered for a moment and said to his confidant beside him: "Find out the identities of these people as soon as possible."

After saying this, Cai Ze immediately got on his carriage and left.

He couldn't wait to know what was written in this secret letter.

Cai Ze had a premonition that this secret letter would be the decisive evidence that he defeated Lu Buwei!

Cai Ze excitedly took the secret letter and returned to his mansion, found a secret room, and then carefully opened it.

However, what disappointed Cai Ze was that what appeared in front of him turned out to be a blank paper.

"Yin Shu?" Cai Ze frowned and began to have a bad premonition in his heart.

After a while, Cai Ze ordered people to prepare the developing water, and once soaked in the water, some characters gradually became clear.

This character appears in front of Cai Ze.

1-7-8,9-2-4,5-6-6

11-2-3,6-7-12,14-4-3,7-7-7

...

Cai Ze looked confused.

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