Poisoning was the better method in Zhu Yunwen's opinion, because if it were an assassination or murder, Zhu Yuanzhang would definitely investigate.

However, if poisoning was involved, it would be difficult to find evidence.

Especially with highly toxic substances, it's very difficult to uncover the truth with current autopsy techniques.

Furthermore, Zhu Shuang was historically poisoned to death by a woman. Letting him die in a way that is more in line with history might prevent any further complications.

Zhao Qingzhu said, "Then I'll contact some friends in the martial arts world who are skilled in using poisons, and poison Zhu Shuang."

Zhu Yunwen nodded slightly, not worrying too much about the matter.

It's currently the Spring Festival, and he doesn't want to deal with too many troublesome matters. He also wants to relax and have a good rest for a while.

So for the next few days, Zhu Yunwen stayed in the East Palace, keeping company with his two younger sisters and Zhao Qingzhu.

In addition, he would occasionally have a few drinks with Zhu Yuanzhang and cook a few dishes, finally enjoying a few days of peace and leisure.

After the Spring Festival, Zhu Di left Nanjing, and Zhu Yuanzhang clearly disliked him.

This made Zhu Di feel uneasy, and since he couldn't get any military power from Zhu Yunwen, he had no choice but to slink back to Beijing.

As for Yao Guangxiao's plan, it is a long-term plan that needs to be implemented gradually.

The rare period of peace lasted only a few days before Feng Sheng, the Minister of War, came to see Zhu Yunwen.

Feng Sheng admired Zhu Yunwen, after all, Zhu Yunwen's methods were already well-known.

Moreover, Zhu Yunwen promoted Feng Sheng to Minister of War. Feng Sheng was very grateful to Zhu Yunwen and immediately bowed to him upon seeing him.

After Zhu Yunwen stepped forward to stop him, he asked:

"Lord Feng, instead of staying home with your family, you've come to see me in such a hurry. What brings you here?"

Feng Sheng hurriedly said, "Your Highness, the Kingdom of Goryeo in the north has made a move. It seems to be gathering troops, all heading towards Heicheng in the north of our Great Ming."

Zhu Yunwen frowned: "Black City? Isn't that a border city with Goryeo? It seems that Goryeo has really become audacious and has coveted the borders of our Great Ming."

Feng Sheng said, "This time, Goryeo has gathered nearly 100,000 troops. Although they are coming in strong, they are not to be feared. General Fu Youde in the north has 200,000 troops under his command, which should be enough to deal with them."

Zhu Yunwen paused for a moment, then smiled slightly and said to Feng Sheng:

"Don't rush to give the order, let's wait and see!"

Feng Sheng said in confusion, "Wait? Your Highness, the army is pressing in and is already close to our border cities. If we don't quickly send troops to set up defenses, we may suffer some losses on the border of our Great Ming."

Zhu Yunwen said to Feng Sheng, "There are people who are more anxious than us and will take the initiative to find a way to deal with this matter."

Feng Sheng asked, somewhat puzzled, "Who is this person?"

Zhu Yunwen looked north, then slowly began to speak:

"Prince Yan, Zhu Di, should be returning to Beijing soon, right?"

Feng Sheng nodded slightly and said, "Judging by the days, it should be about time."

Zhu Yunwen: "Then there's no need to worry about it!"

Feng Sheng couldn't understand Zhu Yunwen's meaning, so he mustered his courage and continued to ask:

"Forgive my ignorance, Your Highness, I truly do not understand the profound meaning behind this. Please enlighten me."

Zhu Yunwen picked up a cup of tea, took a sip, and then put it on the table. Zhao Qingzhu, who was now impersonating his eunuch, poured him another cup.

He then blinked and looked at Zhu Yunwen.

Feng Sheng, however, did not pay attention to the little eunuch standing next to Zhu Yunwen, and obviously did not realize that this little eunuch was actually Zhu Yunwen's future grandson's wife in disguise.

At this moment, Zhu Yunwen looked at the water in the teacup and slowly said:

"Lord Feng, what makes you think that Goryeo has the audacity to oppose our Great Ming? And how dare they invade our Great Ming's borders?"

Feng Sheng frowned and said:

"This is something I am also very puzzled about. It is said that Goryeo has always been a tributary state of our Great Ming and has never dared to offend the might of our Great Ming."

Now they dare to take the risk of approaching the border of my Great Ming Dynasty, and even bring an army of 100,000.

This is clearly a provocation, an attempt to undermine our Ming Dynasty's borders. Such audacity is not something the current Goryeo Kingdom would dare to possess.

Zhu Yunwen: "Therefore there is only one possibility: someone gave Goryeo the courage."

Feng Sheng looked at Zhu Yunwen and asked, "Whom is Your Highness referring to?"

"With such turmoil in the north, who will be given an opportunity?"

Upon hearing Zhu Yunwen's words, Feng Sheng thought for a moment and said:

“Fu Youde? If war breaks out in the north, he will have the opportunity to fight and thus make a name for himself.”

Zhu Yuntong shook his head and said, "Fu Youde has long since restrained himself and is no longer as arrogant as before, so he has no such thoughts, nor would he dare to have such thoughts."

Feng Sheng thought for a moment, then his eyes widened and he said:

“The Prince of Yan, Zhu Di? That’s him. That explains it. There was unrest in the north. As a prince, he should have the right to command troops. He could take this opportunity to regain control of the military.”

Zhu Yunwen nodded and said, "That's right. So this time, Prince Yan, Zhu Di, came to the capital hoping to regain military power. Doesn't that make sense?"

Feng Sheng said to Zhu Yunwen, "But Your Highness has not given him military power."

Zhu Yunwen laughed and said, "That's right, so he must be anxious because he doesn't have military power."

"I still don't understand. He has no military power, so why is he in such a hurry?"

Zhu Yunwen took another sip of tea before patiently speaking:

"The Kingdom of Goryeo is attacking the Prince of Yan in the north. Zhu Di's fiefdom is also in the north. He no longer has military power. If Goryeo is allowed to occupy the north, who will suffer the loss?"

Feng Sheng suddenly realized and said:

"So that's how it is. The Prince of Yan did not obtain the military power he wanted, and once war breaks out in the north, it will cause certain losses to the north."

Without military power, any further losses to his fiefdom would be a bad thing for Zhu Di, the Prince of Yan, and could even worsen.

If Goryeo were to occupy some of the northern cities, it would be tantamount to occupying some of the cities held by Zhu Di, which would certainly not be a good thing for him.

Therefore, now that he no longer had military power, he was very afraid that any war would break out in his own fiefdom.

Therefore, Your Highness just said that the most anxious person is Zhu Di, the Prince of Yan in the north. I understand.

Zhu Yunwen smiled mysteriously, stood up, and said:

"But there's still one thing you don't understand. Prince Yan, Zhu Di, is in a hurry, but how can he solve the problem in the north, right?"

Feng Sheng felt as if Zhu Yunwen had seen right through him; all his doubts and questions were completely clear to Zhu Yunwen.

This feeling terrified him.

He always felt that no matter what he thought, it would not escape Zhu Yuntong's eyes, which made him dare not play any tricks in front of Zhu Yuntong.

Therefore, it is said:

"I do have a question about this. Why didn't Your Highness send Fu Youde to suppress the rebellion? Was it simply to make Prince Yan, Zhu Di, anxious?"