Nanjing, Prince Yan's Palace.

"Prince, when did you start studying military books?"

After Zhu Ying arrived at Prince Yan's Mansion, he found Zhu Gaochi reading in the yard and asked with a smile.

"There is nothing we can do about it. Grandfather Emperor asked us, the eldest princes, to inspect the defense in a few days."

"I know very little about military affairs. This is just a last-minute trick. I don't know if it will work or not."

Zhu Gaochi put down the military book and said helplessly.

Because of his obesity and lack of physical strength, he rarely stayed in the military camp.

It is precisely for this reason that Zhu Di did not like his eldest son very much.

Since coming to the capital, I have basically stopped caring about anything.

"You are here to check the defense, not to lead troops into battle. What's the point of reading military books?"

Zhu Ying said helplessly, you are holding the wrong Buddha's foot.

"Brother Ying, please teach me." Zhu Gaochi was slightly stunned, then he reacted immediately.

With just a few short sentences, he got to the point, and Zhu Gaochi immediately understood that Zhu Ying must be an expert in this.

There was no need for Zhu Ying to hide this matter, so he said directly:

"Defense matters are all about military discipline."

"Of course, this is easy to say, but it is still difficult to strictly implement it."

"But I think that when His Majesty asked you to inspect the defense, it was probably not for the sake of military discipline."

After thinking for a while, Zhu Yingcai continued: "I think you can start from several places."

"For example, the soldiers' diet, living standards, loyalty to the Ming Dynasty, and their diligence during patrols."

"Start with these points, then write a memorial, add your own insights and opinions, and finally put forward suggestions for improvement."

"In this way, I believe you will be able to pass His Majesty's test."

Zhu Ying said as he pondered.

However, what he didn't notice was that Zhu Gaochi's eyes were shining.

Zhu Ying's answer, in his own opinion, was very simple, just like homework in later generations.

As a model student who has perfectly passed the nine years of compulsory education in later generations, I am already familiar with such things.

But what he didn't expect was that this was the Ming Dynasty.

What books did the scholars of the Ming Dynasty read? Basically, they mainly read the Four Books and the Five Classics.

This is not an annotated version. The entire text is written in classical Chinese. Let alone studying the knowledge contained in it, just being able to read it fluently would make you considered a scholar.

When Ming Dynasty was studying, the first books that people learned to learn were Three Character Classic and Hundred Family Surnames.

Then we go directly to the Four Books and Five Classics, which is equivalent to going directly from elementary school to university in later generations. This can be described as the sifting of the sand by the waves.

How many students collapsed right here.

However, the impact of what Zhu Ying said, which was a common routine template in later generations, on Zhu Gaochi was completely different.

Great and famous scholars may not care too much about it.

But for Zhu Gaochi, a teenager, it was like the finishing touch.

"Brother Ying, thank you so much. I was confused at first, but your words are like a revelation to me."

After Zhu Gaochi finished speaking, he quickly stood up and bowed to Zhu Ying to express his gratitude.

"You are too polite, my prince. This is just a trivial matter." Zhu Ying said while holding Zhu Gaochi.

Zhu Gaochi smiled bitterly and said, "To Yingge, it's just a few words, but to me, it's a big deal."

Upon hearing this, Zhu Ying remained silent.

Of course, he was also clear about Zhu Gaochi's situation in the palace.

As the eldest son of the king, he was not treated as the eldest son of the king at all. In many cases, Zhu Di did not even take him with him.

This trip to the capital was an opportunity for Zhu Gaochi.

The crown prince of the Ming Dynasty was not appointed by the prince himself, but was canonized by the emperor.

In the Ming Dynasty, which emphasized the system of primogeniture, Zhu Di could do nothing unless Zhu Gaochi was morally flawed.

Therefore, Zhu Gaochi now urgently needs Zhu Yuanzhang's recognition.

"With your body, I think you should exercise more. This is too much of a burden on you."

Zhu Ying said comfortingly.

He knew that in the future, after Zhu Di successfully put down the rebellion, Zhu Gaochi would eventually become the emperor.

Although there were some twists and turns, it was ultimately safe and sound.

In history, Zhu Gaochi died of illness at the age of 48.

As a good friend now, even if he might become an enemy in the future, Zhu Ying still did not want Zhu Gaochi to die too early.

It is rare to have a true friend in life, although we all have our own little thoughts.

But there is no doubt that in many aspects of their interests, the two of them are like-minded.

"I want to do the same, but I can't stick to it every time. I feel like my whole body is falling apart."

Zhu Gaochi said with a wry smile that his obesity was more like congenital and caused by a disease.

However, the imperial physician had already examined it and found that it was not a disease, but a disorder of the five elements and an imbalance of yin and yang.

Zhu Ying didn't know much about obesity. After all, he wasn't a doctor in his previous life.

But he could understand what was said, it was probably endocrine disorder.

"If you believe in me, you can exercise with me during this period and adjust your diet. Maybe after a while, you will see some results."

After thinking for a while, Zhu Ying said to Zhu Gaochi.

In fact, it is quite simple. Just get up in the morning and run, eat more fruits and vegetables, less meat, and reduce fat intake.

That's about it.

Zhu Gaochi was somewhat moved when he heard this. He admired Zhu Ying very much. Zhu Ying might not know anything about the Four Books and Five Classics, but he was extremely proficient in various miscellaneous studies.

But thinking of his father's instructions, after a moment of hesitation, Zhu Gaochi finally rejected Zhu Ying's proposal on the grounds that he was lazy.

Zhu Ying remained calm in the face of Zhu Gaochi's rejection, as he had already seen that there must be some hidden story behind it.

Zhu Gaochi's excuse was, of course, invalid. Although he looked fat, Zhu Gaochi was actually very persistent and had great willpower, whether in studying or other aspects.

It's just that there may be some other fears.

When Zhu Gaochi saw that Zhu Ying did not ask any further questions, he secretly breathed a sigh of relief.

He couldn't say that it was his father who asked him to reduce contact with Zhu Ying as much as possible recently.

As a son, Zhu Gaochi had some vague guesses about his father's thoughts on Zhu Ying, but he did not dare to think about it too deeply.

After all, to some extent, he can be regarded as a clay Buddha crossing the river, unable to save himself.

"What's the progress of the Armory Bureau?"

After a while of greetings, Zhu Ying felt that the time was right and asked.

Zhu Gaochi said helplessly: "I talked to my father about this earlier, but he refused and told me to study hard and not to worry about these things."

After hesitating for a moment, he said again: "If I can get the emperor's appreciation in this examination, maybe I can go in and take a look."

Zhu Ying was speechless. This kid was quite savvy and it was obvious that he wanted him to help him.

"I wonder if I could accompany the eldest prince when he goes to inspect the defenses," Zhu Ying asked.

"Of course you can, but Ying'er will have to inconvenience you a little." Zhu Gaochi was very surprised to hear this.

"Okay, when you go there one day, just let me know, Prince."

"Brother Ying, thank you so much for this."

It was at this time that Zhu Ying and Zhu Gaochi were talking.

Liu Rixin finally entered the palace.

In the Huagai Palace,

Liu Rixin knelt down and said, "I, Liu Rixin, pay my respects to His Majesty."