In the early morning of the next day, Lu Yan and more than 1,000 others set off for the north, saying that it was the north, but in fact it was not far from their current distance, and it was not too far from Shandong to the Great Wall.

During the recuperation, Lu Yan asked Xu Kai, "Brother Xu Kai, do you know the affairs and strength of this Jurchen clan?"

Xu Kai nodded and said: "I also like to read some history books on weekdays, this Jurchen tribe, the level of development of the Jurchen tribal alliance is to unite the close scattered clans and tribes, and there are many small alliances in many places, followed by the formation of scattered and unlasting small alliances into large alliances, and finally with the Wanyan Department as the core, unified into a consolidated and lasting huge alliance, so that the country is about to emerge." At the time of the Jurchen military tribal alliance, there was a council of nobles and a people's assembly composed of clan nobles. In the clan tribes of the Jurchen clan society, there were family soldiers and tribal soldiers of private families - Meng'an and Mouke. At first, it was non-ordinary, and later it developed into a permanent army. In Jurchen society, private land ownership did not exist at that time, but family ownership had appeared, and the supreme authority of land ownership was concentrated in the representative monarch of the state, which was also a form of transformation of land from public ownership to private ownership. With the development of society, Bo Jin and Bo Jilie became ordinary officials and senior officials of the country, known as officials and big officials in history. To be precise, it is similar to the Liao Kingdom, mainly living on hunting and ginseng from Changbai Mountain, and many young people and Goryeo people have lived in a staggered relationship for a long time, and there has always been a close relationship. The Jurchens learned advanced production technology and easy access to the means of production and livelihood such as cattle and iron from the Goryeo people, while the Goryeo people exchanged the Jurchens for leather goods and other items needed for life. There are two main areas where people live together: one is in the territory of Helan Province, until the beginning of the Ming Dynasty, it was still the main place where "female straight, Tatar, and Korean people" lived together. The second is the area east of the Liaohe River, such as Shenzhou, Liaohe, Qingyun and other places, or cohabiting in the same place, or in the same Tuntian. The Jurchens also had dealings with the inhabitants of the Goryeo Kingdom, mainly the Jurchens who lived in the territory of Helan Province. When the Mongols were at war with Goryeo, they often entered the northern border of Goryeo to "plunder", sometimes as many as 3,000 people. When the Mongol nobles conquered Goryeo, Goryeo became a vassal state of the Mongol Khanate, and the Mongol nobles ordered that the Jurchens were forbidden to "invade the Goryeo people" and not to "enter the Goryeo realm to plunder", so that the Jurchens and the Goryeo people could resume normal exchanges. Later, when a natural disaster occurred in the Jurchen region, the Yuan Dynasty either borrowed grain from Goryeo or ordered the king of Goryeo to transport corn for relief. Because our country is a big country, all the countries near our country are closely related, and unlike the Japanese warriors, the Jurchen people are good at riding and archery, brave and good at fighting, for us, it is also a difficult opponent. ”

Lu Yan said: "Brave and good at fighting, good at riding and shooting, so it's not easy to do, the north has a good location and people, plus they are good at riding and shooting, retreat and attack are efficient, we don't know the terrain, and second, we don't have the ability to be good at riding and archery, we can only be in a passive situation." ”

Xu Kai nodded and said: "That's true, Yingge Ridge is a site of ancient human life in the Neolithic period. The ancient peoples of Northeast China chose this land to thrive. Pottery, stone tools and bone tools have been found at the Yinggeling site. Stone tools include stone axes, stone hoes, stone arrowheads, etc., all of which are made by beating, grinding and pressing, and at the same time, there are tooth knives, tooth cones, mussel knives, net pendants, birch bark tools, etc. Judging from the unearthed historical relics, the net sinker is the fishing and living utensils of the Sushen people, the stone axe is the tool of the Sushen people to travel and hunt, the small pottery pig is the evidence of the domestication of domestic animals by the Sushen people, and the antler hoe is the symbol of the primitive agriculture of the Sushen people. It shows that the Sushen people were mainly fishing and hunting, and were gradually transitioning to primitive agriculture and animal husbandry in a specific historical period. Before the middle of the Ming Dynasty, there were a large number of Jurchens and their contemporaries. Legend has it that the ancestor of the Jurchen tribe, Wanyan Hanpu, a member of the Sumo Jin tribe, has a brother Agudi and a younger brother Baohuoli. During the Zhenguan period of the Tang Dynasty, due to the dispersion of the Su Mo Ya clan, Hanpu, who was over 60 years old, ran away from his former residence in Goryeo. His elder brother believed in Buddhism and stayed in Goryeo, and only came out with him alive. When he walked to Wanyanbu, he happened to encounter people fighting for property and fighting, and Hanpu came forward to mediate and calm the situation. As a reward, Wanyan gave him a green ox. In order to gain a firm foothold here, he used this green ox as a dowry, and married the daughter of a sixty-year-old woman in the Wanyan Division, and gave birth to two sons and a daughter after marriage, and he and his children naturally became Wanyan people. After the establishment of the Goryeo regime of the Wang clan, the Jurchen homeland of the eastern foot of Changbai Mountain, the area around Yiliguling, the Jurchen homeland, became a difficult place for soldiers to fight, and the residents moved away one after another. The eldest of the three brothers of the Jurchen tribe living in the north of the peninsula, Agunai, migrated to the Liaodong Peninsula, the third child migrated to the coastal area, and the second Hanpu came to live next to the dry water of the Bu Ganshui of the Mudanjiang River. According to the Sui and Tang dynasties, the southern branch of the Su Mo Ya tribe was conquered by Goguryeo, and during the heyday of Goguryeo, it ruled the Han four counties in the northern part of the peninsula, and most of the Su Mo Ya people were mercenaries of the Goguryeo Kingdom, so later generations mostly confused Su Mo Ya with Goguryeo and Goryeo. After Meng Yuan went south, he carried out a massacre in the northern region ruled by the former Jin State, and the population of the north fell by more than 70 percent, and economic construction was impossible. The ancestor of the Jurchen tribe is Wanyan Hanpu, and he has a brother Agudi to keep him alive. During the Zhenguan period of the Tang Dynasty, due to the separation of the clan, Hanpu, who was over 60 years old, ran away from his former residence in Goryeo. His elder brother believed in Buddhism and stayed in Goryeo, and only came out with him alive. When he walked to Wanyanbu, he happened to encounter people fighting for property and fighting, and Hanpu came forward to mediate and calm the situation. As a reward, Wanyan gave him a green ox. In order to gain a firm foothold here, he used this green ox as a dowry, married the daughter of a 60-year-old woman in Wanyanbu, and gave birth to two boys and a girl after marriage, and he and his children naturally became Wanyanbu people. The Jurchen people in the literature of the Yuan Dynasty have other names such as Nuzhi, Shui Dada, My Savage, Beggar Fans, and Guwei. Because the ancient texts are vague about the Jurchen people in the period from the death of Jin to the beginning of the Ming Dynasty, scholars today have different views on whether Shui Dada, Wu Zhi Savage, Qi Lie Mi, and Gu Wei were Jurchen people; some believe that Shui Dada belonged to the "Mongol language family", and the Wu Savage and Qi Lie Mi were not Jurchens; some say that the Gu Wei of the Yuan and Ming dynasties refer to the Ainu people who newly moved to present-day Sakhalin Island. These views are undoubtedly beneficial for the in-depth study of the Jurchens of the Yuan Dynasty, but they are inconsistent with the main historical records of the Sui, Tang and Ming dynasties in China. After the Yuan Dynasty unified the country, many Mongol nobles converted farmland into pasture, and during the 90 years of the Yuan Dynasty's rule, the economy of the north did not recover. At the end of the Yuan Dynasty, the peasant uprising swept across the country, and in the repeated contest between the Yuan army and the peasant army, the economy in the north, which had just picked up some ground, collapsed again. In the early days of Zhu Yuanzhang's establishment of the Ming Dynasty, the economy and population of Hebei, Henan, and Shandong had reached the freezing point, so there was a great migration from Shanxi. In terms of its economy, since the Southern Song Dynasty, China's economic center has completely shifted to the south. The northern region was repeatedly ravaged by the Jin and Mengyuan regimes, and the economic level plummeted, and the population was greatly reduced. It was only after the world was initially stabilized that the north began to slowly recover its vitality. However, due to the long period of destruction, the specific level is still far from that of the southern region. If there is no suitable reason, in the face of the fierce attack of the Jurchens in the northern steppe, our army is likely to choose to retreat. This retreat has reached the point where it is now, and even the Great Wall is about to be attacked. ”

Li Yun rubbed his head and said helplessly: "This is really a headache, I heard this messy, it's not easy to do, anyway, I heard that the Jurchen clan is not easy to deal with, so what should we do?"

Lu Yan shrugged his shoulders and said: "The soldiers will block the water and cover the earth, no matter how powerful the Jurchen people are, they are also people, as long as they are people, I haven't been afraid of anyone, really, don't grow others to destroy their own prestige, there are a few wise leaders of us, I'm afraid of him as a bird's egg." ”