Juyongguan, one of the most famous passes on the Great Wall, was first built by Qin Shihuang. Because countless soldiers were recruited during the construction, prisoners and civilians were recruited here, and the meaning of "moving to Yong" was "to live in Yong", so it was named Juyong. Moreover, this name was used until later generations. Although Juyongguan had long lost its function in the era of Li Jie's life, it became one of the most famous landscapes on the Great Wall.

Zhu Di stood at the top of the city and pointed at the winding Great Wall on the mountain and introduced excitedly: "Brother, look, the city gate here was created by the father-in-law and King Kaiping. The first two northern expeditions also started from here!"

Zhu Biao and Li Jie also looked at the Great Wall on the mountain like a giant dragon. I remember that Xu Da led his troops to set out from here to the north. Although he had failed, his overall strategy was still very successful. The remnants of the Mongolian Yuan Dynasty had been completely eliminated, and there were no enemies on the grassland that could threaten the Ming Dynasty.

"The Great Wall is indeed magnificent, but unfortunately it has only been built for this period!" Zhu Biao said with some emotion at this time. After he came to Beiping Prefecture to settle it, the first thing he did was to go to the Great Wall dozens of miles away to inspect. After all, this defense was too important to the Ming Dynasty.

However, although the Ming Great Wall is famous, it was mostly built after orthodox. In the early Ming Dynasty, there were not many Great Walls built. For example, now Lao Zhu only asked people to build the city gates at Juyongguan, Gubeikou, Xifengkou, etc. As for the Great Walls in other places, it was already ruined because it had been through the Song and Yuan dynasties. Lao Zhu only asked people to repair what could be repaired, but it would be fine if they could not be repaired.

"Brother, our country is now in full swing, almost suppressing the grassland people in the north. My father had already killed them several northern expeditions, so he naturally did not dare to go south to invade the border again. In this way, how could there be any other Great Wall?" Zhu Di spoke proudly at this time.

Although Zhu Di's words were boasting about Lao Zhu, most of them were facts. Now the Ming Dynasty has an advantage in military affairs and has the initiative. It is almost a fight if you want to fight and return if you want to. It can be said that this period was the darkest period of the northern nomadic peoples. With such a great military advantage, the Ming Dynasty naturally did not need the Great Wall to defend. In addition, Lao Zhu was extremely short of money, so he was even more reluctant to build the Great Wall.

In fact, not only Lao Zhu, but also launched several northern expeditions after Zhu Di came to power, and also held the initiative in the military, so Zhu Di was not interested in building the Great Wall. At most, he just learned from Lao Zhu and repaired the old Great Wall.

However, when Zhu Di died, his children and grandchildren were unwilling to use large-scale troops on the grassland, so they began to build the Great Wall. Later, the Tumu Fort Incident caused the Ming Dynasty to lose its military advantage, and the scale of building the Great Wall was even larger. Most of the Ming Great Wall seen in later generations were built during this period.

Zhu Biao was a little dissatisfied with Zhu Di's words, and he was silent for a moment and said again: "The military strength of all dynasties cannot last forever, so I am worried that my Ming Dynasty will be weak in the future and I will probably be on the defensive position. It will be a bit too late to build the Great Wall."

"Isn't this simple? The border troubles in the north are mainly caused by the grassland people. Let's just send troops to destroy all grassland people while they are strong, and completely eliminate this trouble!" Zhu Di said again with murderous aura at this time.

Zhu Di thought so, in fact, he did the same. After Zhu Di ascended the throne in history, he launched five northern expeditions on the grasslands, several of which were personally expeditioned. In the end, he died on the way to the fifth northern expedition. However, although the effects of these five northern expeditions were somewhat, they could not be compared with the Northern Expedition organized by Zhu Yuanzhang, and they did not completely eliminate the border troubles in the north.

"Fourth brother, if you can solve all problems by just fighting, then the things in this world are simple!" Zhu Biao was obviously more mature than Zhu Di. Although he did not reject the war, he did not agree with it. Unless there was no other way, he was unwilling to use military means to solve the problem.

"Why can't the problem be solved in war? Didn't our father defeat Chen Youliang and Zhang Shicheng by fighting, and even defeat the Mongols. The entire Ming Dynasty was defeated by our father. Isn't this a problem solved?" Zhu Di said a little dissatisfied. He was impulsive and said whatever he had, without any concealment even in front of Zhu Biao.

"Emperor Gaozu of Han said back then that he could conquer the world immediately, but he could not dominate the world immediately. Although some problems can be solved by fighting can be solved, the effect is not good. Sometimes, some other means can be used, which can achieve better results." Zhu Biao smiled again.

"Your Highness is right. Just like you are in Goryeo, Fourth Uncle, if you hadn't been provoking Li Chenggui and Zheng Mengzhou in advance, you wouldn't have defeated Goryeo so easily. In addition, Japan, Yoshihiro Ouchi could also develop into a dark line for my Daming, thus saving a lot of energy." At this time, Li Jie also interrupted with a smile.

"You two son-in-law and son-in-law are really full of fun, but I don't care. Anyway, I'm only responsible for fighting, so you should do what you think about!" Zhu Di said, but said with a lingering mouth.

Zhu Biao shook his head helplessly when he heard Zhu Di's words, but Li Jie smiled and said nothing. With his understanding of Zhu Di, the other party was definitely not a simple-minded reckless man. On the contrary, Zhu Di was actually an extremely intelligent person. It can even be said that his talent was not inferior to Zhu Biao. However, Zhu Di liked to show his reckless side intentionally or unintentionally. One advantage of doing this is that it can make people relax their vigilance against him unknowingly.

"Let's go, let's climb up the mountain and take a look!" Zhu Biao said excitedly at this time, pointing at the beacon tower on the mountain. He finally came to the Great Wall, of course he wanted to climb to the highest point to look at the surrounding scenery.

Zhu Di immediately smiled and said, "It's okay to go up, but brother, can you be healthy? I remember when I marched in the past, I was carrying you to reach the end."

"I used to be too fat, but now my body is much stronger than before. If you don't believe me, let's compare. Let's see who can get the first one to climb up?" Zhu Biao also blushed when he heard this. As the eldest brother, he is almost better than his younger brother in all aspects, but his health is much worse.

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"Okay, let's compete!" Zhu Di smiled again. Even if Zhu Biao got rid of the fat on his body, he didn't believe that he would be better than himself who had been practicing martial arts all year round.

At that moment, Zhu Di personally took Zhu Biao and Li Jie along the wall and began to climb towards the beacon tower on the top of the mountain. This Great Wall was built on a rather steep mountain. Although there were steps, it was still very steep. However, Zhu Di was walking as fast as he could. Zhu Biao and Li Jie could still follow him at first, but later he was thrown away.

In the end, of course, Zhu Di was the first to climb the top of the mountain. Li Jie arrived a few steps earlier than Zhu Biao because of his youth. When Zhu Biao reached the top of the mountain, he was exhausted and panting. Although he successfully lost weight, his physical foundation had not yet fully recovered. He had nothing to do, but the difference could be seen as soon as he exercised.

Compared with Guancheng at the foot of the mountain, the view on the mountain is wider. The mountains on both sides of Guancheng are lush, like layers of jade superimposed together. This is Juyong Diecui, known as one of the eight scenic spots in Yanjing in later generations.

However, compared with the natural beauty, what shocked Li Jie and Zhu Biao even more was the artificial Great Wall. Compared with Guancheng at the foot of the mountain, you can see the Great Wall like a dragon winding and circling in the mountains more clearly on the mountain, and you can see the end at a glance. It is precisely because of this giant dragon that you can protect the peace of the Central Plains.

"No wonder Song lost the land of Yanyun, and the Great Wall fell into the hands of the Liao people. People were slapped everywhere. If they were not allowed to understand the importance of the Great Wall, they would probably never be able to understand the importance of the Great Wall!" Zhu Biao also exclaimed at this time. In the past, he could only experience the majesty of the Great Wall from books, but until he saw it with his own eyes, he found that his previous fantasy of the Great Wall was still far less than that of the real thing.

"Brother, the Great Wall is just one of the border defense lines, and it is not the most periphery line. Outside the Great Wall, there are also Daning Wei, Kaiping Wei, Dongsheng Wei and other garrisons. In addition, the father restored the three surrender cities, making the garrisons in the south of the desert connected together, which was enough to ensure that the Beiping Prefecture was foolproof!" Zhu Di once again introduced the military defense line on the border.

Zhu Biao nodded when he heard this. Before he came to Peiping Prefecture, what he was most worried about was the safety of Peiping Prefecture. After all, it was too close to the border. If the border was lost, the enemy might march straight into the capital of Peiping Prefecture. If the capital of Peiping Prefecture was set as the capital of the country, there might be danger of destruction of the country in the future.

However, after listening to Zhu Di's explanation and his personal experience, he found that the defense of Peking Mansion was very strong. Unless there was a problem within the Ming Dynasty, it would be difficult for the enemy to reach the capital of Peking Mansion.

Thinking of this, Zhu Biao couldn't help but turn his head to look at Li Jie, and Li Jie smiled at him. Neither of them spoke, but they both understood each other's meaning, especially Zhu Biao, who had previously listed Luoyang as one of the national capitals, but now he found that compared with Luoyang, Peiping Prefecture does have greater advantages.

"Uncle Fourth, did you come back from Goryeo this time? Did you come back by boat?" Li Jie suddenly asked Zhu Di again at this time, which also interrupted Zhu Biao's contemplation.

"Of course, if I go by land from Goryeo to Beiping Prefecture, I'm afraid I have to go around a big circle and take a few months to get to Beiping Prefecture, but if I go by sea, I can take a boat to Dazhigu directly, and I can arrive in as early as a few days." Zhu Di nodded immediately and replied.

"When you arrived in Dazhigu, did you see a grain transport ship from the south?" Li Jie asked again. The so-called grain transport ship from the south is actually a ship that is transported by sea. Because the transportation capacity of the Dadong River is limited, the grain supply in the north is not enough. So Li Jie suggested to Lao Zhu to take shipping, and it has been a long time since it has started.

"I saw that big belly grain transport boat is so easy to recognize. I didn't expect that my father would let the grain come from the sea." Zhu Di nodded again after hearing this.

Zhu Biao next to him finally understood that Li Jie's words were reminding him that Peking Mansion had another greater advantage, that is, it was very close to the sea, which was incomparable to Luoyang.
Chapter completed!