"That's what I think too. Our improved landmines don't need to be lit; they just explode when you step on them." Zhu Yunying said to his father with a smug smile, "Although those warhorses are trained, after a few cannon shots or being directly injured by the explosions, the cavalrymen are thrown into disarray."

Old Zhu naturally understood this principle and laughed, "We don't need too many. We just need to blow up their cavalry in front. Once their formation is broken and their charging order is gone, it'll be easier for us to kill them."

These investments were worthwhile; Zhu Yunying was consistently diligent and generous in his military research and development. His investment in firearms, in particular, was continuous and relentless, all in order to maintain an overwhelming advantage.

Old Zhu was very pleased and looked at Zhu Yunying, saying, "Our grandson is truly farsighted. If it were me, I wouldn't have been able to do it. I thought the old firearms were sufficient, and I never thought of changing the barrels or creating landmines like you."

Zhu Yunying was a little embarrassed and said, "Grandpa, please don't always be like this. I am only able to do these things because of the solid foundation left by you and Father. If I can't even do these things well, then I would be too incompetent."

Old Zhu glared at him, clearly displeased. "What's wrong? Just because our grandson is capable, we can't even say anything about it?! Our grandson is indeed clever, our grandson is indeed farsighted! If it weren't for our grandson's brilliance, would these landmines and grenades be so powerful?! If anyone dares to say anything, I'll give them a piece of my mind!"

Well, that's just Zhu Yuanzhang's characteristic—he's extremely protective of his own children. He's fiercely protective of all his other sons, but when it comes to matters concerning the eldest Zhu, the youngest Zhu, and even the smallest Zhu, Zhu Yuanzhang doesn't need to be right; his children are always the best and most brilliant!

Just as the grandfather and grandson were chatting, a little figure appeared. It slowly climbed up the high threshold, and then sat down on the threshold, grinning foolishly, as if it were tired.

Before Zhu Yunying could say anything, Old Zhu chuckled, "Crown Prince, come to your great-grandfather."

Little Zhu immediately ran over, shouting as he ran, "Great-grandfather, I'm going to school!"

Old Zhu picked up the little guy and asked with a smile, "Oh? Then tell your great-grandfather, what have you been learning?"

Little Zhu couldn't remember anything at once; he only knew he had read books. But when asked what books he had read, the little guy couldn't recall. This made Little Zhu, who was eager to show off, anxious, and he almost cried.

This made Old Zhu very distressed, and he quickly asked, "Crown Prince, have you read the Three Character Classic, the Hundred Family Surnames, and the Thousand Character Classic?"

Little Zhu perked up and exclaimed, "The Three Character Classic! My mother even praised me!"

Old Zhu was even happier and had Shuangquan find the Three Character Classic to read with Little Zhu. The studious little Zhu didn't disappoint; the eager-to-show-off little fellow studied with great enthusiasm, much to Old Zhu's delight.

Zhu Yunying found it somewhat amusing and looked at Little Zhu, saying, "This kid is still closer to his grandfather. He's only just started reading and learning a little, and he's already running to show off to his grandfather."

Old Zhu was even happier, holding the chubby little Zhu and saying, "He is our great-grandson after all, and we dote on him so much, so naturally we love him dearly! It's just that the Empress can teach Yin'er a little bit about his early education, but we can't let her teach him all the time."

“I know, my grandson has also mentioned these things. Although we don’t want Yin’er to become a great Confucian scholar, he should still know some classical allusions. Some Confucian knowledge is indeed useful.” Zhu Yunying said with a smile, “I will find some study companions at the Imperial Academy or the Hanlin Academy, but we can’t find anyone who is bookish to the point of being stupid.”

Old Zhu seemed to remember something and said, "Your grandmother's legacy must continue. What do you think about having empresses of future dynasties manage the imperial granary?"

It seems that Zhu Yuanzhang knew that Xu Miaoqing had taken the Crown Prince to Hongcang and met with some students from the Imperial Academy, and he was clearly very satisfied with this matter.

"That's what I was thinking too, otherwise I wouldn't have sent the Empress and the Crown Prince to the Imperial Academy," Zhu Yunying said. "To be honest, among all of us, Grandmother is the kindest-hearted."

Old Zhu looked at Little Zhu and couldn't help but get angry. "Can't we do it? How many emperors love their people more than we do?! We can see it now. No matter what we do or how much we care for you, you're always on your grandmother's side! Get out, get out, we don't want to see you!"

Okay, Old Zhu is jealous. It turns out his most beloved grandson isn't so considerate after all!