Although Li Bao usually likes to be lively, at the beginning, he heard Xin Zan's chatter, pointing to Huaiying and abandoning the mountains and rivers, but he was not very interested, so he simply stayed away. After hearing Xin Zan talk about the battle of Yue Fei and Xiangfan, and about Wusheng Pass, it was the most lively battle he fought with Yue Fei, where could he still bear it, so he couldn't help but come over and interject. He has been a handsome man all his life, chased after Yue Fei back then, and experienced many big battles and vicious battles. He said that Yue Fei used soldiers like gods, and the soldiers forgot to die, and the battle was fierce, the process was tortuous, and the victory or defeat was only between millimeters, which was different from what Xin Zan said, and he could hear Huaiying and Qiji's eyes swords and swords, and his ears were full of gold and iron, and his blood was full of blood, and his heart was surging.

King Yun listened to Xin Zan and Li Bao speak happily, and sighed: "Preaching like this all the way, even we and others are more deeply touched and have gained a lot." The best way to get a full picture of the world's river valleys and mountains is to get a geographical map. I am a scholar of heaven and earth in Shen Kuo, with all kinds of things in my chest and abdomen, and I am really the first person since the beginning of the world. He is not only familiar with the geography of the mountains and rivers in the world, but also can deduce the past and the future. He saw that between the cliffs of Taihang Mountain, 'the cowardly snail shells and stones are like birds' eggs, and the stone walls are like belts', so he said, 'This is the seashore of the past, and now the east is nearly a thousand miles away from the sea'. I began to know what he said, and I was skeptical. I ran over to see it myself, only to know that this was indeed the case, and I couldn't help but marvel, and I didn't know how he did it, and the conclusion was so conclusive and irrefutable.

"In March of the eighth year of Xining, the Song-Liao border dispute, and Liao wanted to take Huangwei Mountain as the dividing line, but the Great Song Dynasty did not allow it. Liao envoy Xiao Xi went to Bianjing to ask for it, and vowed not to give up until the goal was achieved. Shen Kuo immediately went to the Privy Council to check the archives and found that the Song-Liao agreement was bounded by the ancient Great Wall, and Huangwei Mountain was thirty miles to the south, so he submitted it to the imperial court, so the Liao envoy had nothing to say.

"People in the Central Plains have always attached great importance to maps. As early as the Wei and Jin dynasties, Pei Xiu proposed the 'six bodies of cartography', and geographical maps were indispensable for marching and fighting, and for the management of mountains and rivers. When he arrived in my dynasty, Shen Kuo presided over the compilation and painting of the "Map of Tianxia Prefecture and County", but unfortunately this map was never seen again after the Jingkang Change, and I don't know whether it was a war or was looted by the Jin soldiers. Aunt Shen participated in the production of this picture, and when she meets Aunt Shen in the future, she will have important things to explain. Huaiying, abandon the disease, it is good to be lucky enough to get a map in the future, if you can't get it, you must also try to know the geography of the world, so that there is no map in your hand, and you have a map in your heart. Huaiying and Qijian thought about what kind of amazing person Aunt Shen should be, and at the same time claimed that it was.

King Yun continued: "My Great Song Dynasty was originally bounded by the boundary river Yanmen Pass in the north and intersected with Liao, and the northwest was bounded by Hengshan, eastern Gansu, Huangshui and Western Xia; Southwest over Minshan, Dadu River is Dali country, south to Qiqiao River and Annam.

"Tianxia Prefecture County Map" is modeled on "Yugong Kyushu Map", is a set of the most accurate map in contemporary times, in addition to having an accurate calculation ratio - fraction, and set up a total of seven methods of "quasi-hope, harmony, extension, high and low, square oblique, straight", and divide the "twenty-four to" according to the square area, thus greatly improving the scientific nature of the map.

Xin Zan added: "It took 12 years for Shen Kuo to complete this set of maps, and there are 20 maps in total, including the general map of the whole country and the regional map, of which the large map is 1.2 zhang high and 1 zhang wide, and is accompanied by a special book description, which has now been lost. During this period, he was demoted due to the 'defeat of Yongle', but he still worked tirelessly, and finally completed the compilation of this set of maps in the second year of Yuanyou. is still a high learner, unlike me who tried my best, or hung up on one omission and generalized everything. ”

King Yun smiled at Xin Zan and said, "Brother Xin is humble!" I don't have him, but when I was young, I was fortunate enough to follow Aunt Shen to read the "Tianxia Prefecture County Map", and I knew some fur. ”

After speaking, he let out a long breath and said: "The map is in a scale of 1/900,000, a total of 20 maps, including a general map of the whole country and 19 sub-maps, and the production is ingenious. During the mapping period, Shen Kuo proposed nine methods, such as fraction, quasi-hope, mutual integration, extension, high and low, square oblique, and straight, and divided the 'twenty-four solstice' according to the square domain, which was extremely accurate. In the Nineteen Blessings Diagram, the axis of the large picture is one zhang high, one zhang wide, the dots and lines are clear, extremely complicated, and there is a special book to explain it. Aunt Shen talked to me for ten days, and I thought I could see the whole picture, but Aunt Shen said that what she said was less than one in ten compared to her grandfather. I can't help but express my admiration for Shen Kuo.

"The Central Plains, also known as Huaxia, Zhongtu, and Zhongzhou, refers to the middle and lower reaches of the Yellow River centered on Heluo

"Zhongyuan means 'the wilderness in the middle of the world', it is the birthplace of Chinese civilization, the cradle of the Chinese nation, and is regarded as the center of the world. With the great integration of the Chinese nation and the expansion of the Central Plains civilization, the Central Plains region has gradually spread outward, expanding the exchanges between the Han nationality and various ethnic groups with the Central Plains culture as the core, and the Central Plains culture occupies a core position in the process of pluralistic integration of the origin of Chinese civilization. The culturally advanced Chinese nation is called China because it is different from the four yi.

"The Central Plains region is the largest number of dynasties in China, the longest history of building the capital, the largest number of ancient capitals, since the Xia Dynasty, there have been more than 20 dynasties such as Shang, Zhou, Han, Wei, Jin, Sui, Tang, etc., more than 300 emperors set the capital or moved the capital here, the Central Plains has long been China's political, economic, cultural and transportation center, since ancient times there is a saying that "those who get the Central Plains get the world", and the Central Plains can stand the world.

"The Great Song Dynasty has now lost the Central Plains, Shanxi and Guanzhong, the situation of the border pass is very different from before Jingkang, the original and Liaojie River, Yanmen Pass line, the Northern Song Dynasty Baigou Town is on the south bank of the ancient Baigou River, the ancient Baigou River is the boundary river between the Northern Song Dynasty and the Liao State. The current Gaobeidian City and Dingxing County belong to the territory of the Liao State (Khitan regime), called Zhuozhou Xincheng County in the Song and Liao periods, and the current Dingxing County has not been established at that time, Dingxing County is established by the Jin State later, and the current Dingxing County belongs to Yi County, Laishui and Rongcheng in the Song and Liao periods. The Dasan Pass is stuck at the north entrance of Chencang Road in the west of the Qinling Mountains, and if it is lost, the Jin people will inevitably occupy Sichuan, just like the Yanmen Pass that resisted Liao. ”

Although it is not the first time to go far away, riding on a horse to climb high and look into the distance, listening to grandpa and uncle talk about the greatness of the world, it still seems extraordinarily ambitious. The mountains and rivers of the old country of the heart are broken, and it is the time when the great Song Haoerlang wants to take on the responsibility, and he can't help but feel excited: "The world is so big, Shen Kuo actually drew a detailed map, he is really a god." If the map is really in the Jin Kingdom, this time I must have managed to get it back, destroy the thieves, and restore the homeland. If it is really lost, I should collect all the mountains and rivers in the world and make a map in my heart, so I will follow what King Yun said, there is no map in my hand, but I have a map in my heart. ”

At this time, there were three poles on the sun, and Yun Wangqi said: "Why are there still few pedestrians on the road at this moment?" Li Bao said with a smile: "Now that the autumn harvest is over, it is the laziest time when people have just finished their work, and they get up late." Those who are going south have not yet met, and those who are going north are not so eager, not like we get up early and go fast. If you can see a lot of people on the road now, unless they have fallen from the sky. ”

King Yun couldn't help laughing and said, "In that case, Huaiying and abandoning illness, let's continue."

"The use of troops in the pass, refers to the dangerous pass, the victory or defeat is the most obvious, in the traffic artery set up defense facilities, also known as checkpoints. If it is really time to fight a big battle, both sides must have enough room for maneuver, and what is usually said to be the Central Plains means that a decisive battle should be waged in a large open field. Only in a large enough open area can both sides devote enough troops to carry out the most fierce offensive and defensive attacks. King Yun also took this opportunity to select examples of fierce offensive and defensive battles between the two sides in several internally important areas such as western Henan, southern Anhui, and Xiangfan regions, and carefully explained to Huaiying and Qiji.

A few people rode lightly and quickly all the way, not hurrying or slow, as long as there were few pedestrians, they talked a lot, and the interest was quite high. After walking one hundred and seventy or eighty miles in one day, at sunset, you can see Shangqiu City.

King Yun raised his eyes and looked into the distance, and sighed with emotion: "Shangqiu is the 'source of Yin Shang', which was the earliest capital of the Shang Dynasty, and the terms of merchants, commodities, and commerce also originated here. Later, King Cheng of Zhou sealed the descendants of Yin Shang and Weizi Qi in Shangqiu, called the Song Kingdom, and the capital was Song City. Before Taizu ascended the throne, he also served as the envoy of the Song Prefecture to the German Army, and then established the name of the country Song, which is the origin of this, so Shangqiu is the place of Longxing of the Great Song Dynasty. ”

In fact, not only Zhao Kuangyin was born here, but the current Emperor Zhao Gou of the Great Song Dynasty also ascended the throne in Shangqiu at the beginning, when he was called Yingtian, and later was attacked by Jin, and the capital was Lin'an. King Yun naturally understood in his heart, but the Great Song Dynasty was embarrassed after the change of Jingkang, and Zhao Gou ascended the throne in Shangqiu in a hurry, and then fled in embarrassment, this matter was so boring to say, and he didn't want to mention it.

"Shangqiu is located in the hinterland of the Central Plains, and was once the capital of the Shang and Song dynasties, and has been indispensable for conquest since ancient times. In "The Art of War", the "Usage Chapter" says, "The prosperity of the past Yin, and the love of Yi Zhi is in the summer; Zhou Zhixing also, Lu Ya is in Yin. Therefore, only the wise and virtuous generals, who can use the wisdom as the intermediary, will achieve great success'. When Shang Tang was fighting Xia Ji, he sent Yi Zhi to Xia Di from then on. Coincidentally, when the Shang country was about to end, Zhou had Jiang Shang to Yindi, but at that time, the Shang capital moved to Chaoge. ”

King Yun saw that there were no outsiders on the left and right on the road, and said: "Although Song and Jin are enemies in their bones, there is always a paper "Shaoxing Peace Conference".

Although the Song was not known for its military force, it was undeniable that the Song army possessed the best military weapons of its time. In order to prevent the outflow of weapons and the leakage of military secrets, the Song army established a strict weapons management system.

"Back then, Di Qing had an order: 'Bows and arrows are not allowed to enter the outside world'. In order to better defend against the infiltration of foreign espionage, Song also began to focus on cultivating his own and becoming more and more professional, a large amount of government funds were used to establish military intelligence agencies, and a group of people who were proficient in the way of espionage were hired as official government workers. These capable men were sent to the countries around the Song Dynasty to infiltrate, and were responsible for secretly collecting military intelligence and safely transmitting them back to China.

"Now Song and Jin have set up their own fields in the territory. During the Taizong period, the Song and Liao Dynasty had set up the field in Zhenzhou and other places in the Song Dynasty, and soon it was abandoned due to the Song-Liao War. After the alliance of the Yuanyuan, between the Song and Liao, there were mainly the four fields of Hebei such as Xiongzhou, Bazhou, Ansu Army, and Guangxin Army in the Song realm, as well as the Xincheng field in the Liao realm. Between the Song and Xia dynasties, four years before Jingde, the security army set up a market in the market, and later in the Zhenrong army and other places. In the Renzong, Shenzong and other dynasties, they were all abolished for a time due to war. In Liao and Xia, there is a Zhenwu military field in Liao. Jin Guoguo signed a peace treaty with the Song Dynasty and demarcated the border. After that, the Song and Jin successively set up fields in Xuyijun and Guangzhou, Huajing Town, Zaoyang (now Zaoyang, Hubei) in the Song realm, Sizhou, Shouzhou (now Fengtai, Anhui), Caizhou (now Runan, Henan), Tangzhou, Dengzhou (now Dengzhou, Henan), Yingzhou (now Fuyang, Anhui), Xizhou, Fengxiangfu, Qinzhou, Gongzhou), Taozhou and other places in Jinjing. The golden summer field is mainly in Lanzhou, Baoan Prefecture, Suide Prefecture, Dongsheng Prefecture, Huanzhou and other places in the whole territory. In addition, the Liao Dynasty also set up a field in Baozhou and other places, and the Jin Dynasty also set up a field in the northwest of Xijing Datong Mansion and Yinwengkou to carry out mutual trade with Goryeo and surrounding ethnic groups. (See the humble work "The Legend of Xin Qiji")

"Before Jing Kangzhi was difficult, the Great Song Dynasty did not use the art of espionage very much. Although at that time, Fan Zhongyan, Di Qing, Bao Zheng, Ouyang Xiu, Su Zhe, Wang Anshi, Shen Kuo and others made detailed accounts of the military situation of the enemy country after returning from the Liao State, they all did these things only by accident, which was a spontaneous act rather than a conscious act, and could not form a scale and system. Because he never knew the enemy's situation, he later made an alliance with Jin at sea, and the two countries united to attack Liao, so he exposed his weakness to the enemy, and finally made an unforgivable mistake. ”

Everyone was talking about it along the way, but Fan Jiu'er didn't talk much, at this time, he heard that there were spies from each other in the courts of Song and Jin, and he couldn't help but be very curious, and finally couldn't help but shout at this time: "Which one is the spy sent by Jin Guo to the Great Song Dynasty?" ”

Fan Jiu'er was born lively and active, unlike Huaiying and Qiji, who are a little bit like an old pedant who holds books and reads hard every day, Li Bao usually likes to talk to him more and cheer him up. It's rare that this kid was just able to speak, and when Li Bao heard it, he took over with a smile and said, "Naturally, it's Qin Hui as the head, and of course there will be other people." ”

Fan Jiu'er was anxious when she heard this: "Then don't you catch them one by one, and then slaughter them one by one?" ”