Before arriving in Taiyuan, Yi Feng heard the sound of surging water and kept thinking. Spring brings warmer water, glaciers thaw and rivers rise. Taiyuan City has Fen on the left and Jin on the right. A large river runs through the middle of Taiyuan City. This is not an ordinary city, but three cities connected. It goes back for more than 40 miles. The Fen River passes through the middle city and diverts the Jin River into the city. West City, Zhongcheng and East City. The city is magnificent and the scenery is majestic. The buildings in the city are lined up in rows and layers, showing the scene of magnificence, splendor and prosperity. People like Yi Feng and others show the important position of the gateway to the original and the center of the north. It was not the first time that Yi Feng saw this city, but he was amazed every time he saw it. Compared with Huaihuang outside the Great Wall, this city is huge. Compared with Youzhou, an important town in Hebei Province, it is prosperous and wealthy. Compared with the great prosperity of the capital, this place is also full of vitality and magnificent. Looking at the swirling turbulence of the turbid river water mixed with ice, Yi Feng sighed repeatedly. Taiyuan is located in the center of Hedong, at the northern end of the Taiyuan Basin. It is surrounded by mountains on three sides in the west, north and east, with valley plains in the middle and south, and the entire terrain is high in the north. The southern part is in the shape of a dustpan. The Taihang Mountains are on the left, the Luliang Mountains are towering on the right, the Yunzhong and Xiezhou Mountains are hugging each other at the back, the Taiyuan Plain is spread out in the front, and the Fen River runs through the entire territory from north to south. In addition to the three Taiyuan passes in the north, and the two Xiongguan fortresses of Loufan and Yanmen further north, it can be said that this is indeed a natural fortress center. As long as Taiyuan is defended, the entire north will be stable, and it can also ensure that Henan and Guanzhong security in important areas. Since the Wei Dynasty, Taiyuan has been the center of the Northern Dynasties. Compared with Chang'an, a city in Guanzhong that came back to life after the Western Wei Dynasty entered the customs, Taiyuan has a deeper foundation than Chang'an. The Zhou and Sui dynasties established their capital in Guanzhong, and the Sui Dynasty built a new capital that flourished for nearly twenty years. But it's still not much better than Taiyuan City. To this day, if we rank the cities of the Sui Dynasty. Daxing can be ranked first in terms of political, military or economic status. And second. There is no doubt that it belongs to Taiyuan. Luoyang cannot compare with Taiyuan, Yangzhou cannot compare with Taiyuan, and Jingzhou, Chengdu, and Youzhou cannot compare with Taiyuan. For a long time, although the Sui Dynasty established its capital in Daxing and did not openly establish a companion capital, it was implicitly regarded as Luoyang as Tokyo and Taiyuan as Beijing. Yifeng and Yang Xiong rode forward together, and Yuchi Gong personally served as the flag officer of Yifeng. The bright red flag flies with a white tiger representing Yi Feng. The first place they approached was the West City of Taiyuan Sanlian City. The tall West City was in sight, across the surging Fen River. A huge iron cable bridge spans the Fenshui River. The iron bridge is very large. There is a huge bridgehead on each side of the river. It not only guards the river bridge, but also serves as a fixation for the iron cables. There are two ten thousand kilogram iron oxen built in the bridgehead. A dozen thick iron cables were pulled from the bridgehead wall into the fort. Tie to the big iron bull. One mile around the bridgehead, the fort is six feet high and built with large bluestones, with only two doors. There are six-story arrow towers built on both gates, with eighteen arrow windows on each floor. There are 108 arrow windows on the front and rear sides of the entire arrow tower to guard the fort gate. The fort gate is huge. There are also one hundred and eight large copper nails hammered into the door. In case of war, you can directly apply thick mud between the big copper nails on the door. To prevent fire attacks and enhance defense. Taiyuan City is worthy of being a military fortress. The bridgehead of the cable bridge on the river outside Taiyuan City is so majestic and solid that it can be said to be unstoppable. What is even more amazing is that there are three such chain bridges in Taiyuan City. When this happened, the first thing that had to be said was the location of Taiyuan City, the Fen River and Jin River, and the Jin Canal that was later excavated. Taiyuan¡¯s three connected cities are connected from east to west, and there is a middle city in the middle that closely connects the two cities from east to west. And the Fenhe River, which runs from north to south to the east of the river, passes right through the middle of the central city. The Jin River flows through the west side of Taiyuan City. Taiyuan dug an aqueduct from the Jin River on the west side for the use of the three cities. This channel runs through the three cities of Taiyuan from west to east, and runs through the north and south. The Fen River in the middle city happens to cross. The Fen River and the Jin Canal form a cross, and then form a triangle with the Jin River. At the intersection of Fen River and Jin Canal in the Central Plains of Taiyuan, a city bridge was built in the middle city to connect the two sides. On the west side of Taiyuan City and south of Jin Canal, a Yurang Bridge was built, and on the Fen River in the south of Taiyuan City, there was another Fenhe Bridge. "This chain bridge and bridgehead were both built by the King of Jin when he was in charge of Bingzhou. Originally there was only a pontoon bridge, which was very inconvenient. When it froze in winter or there were heavy rains and ice, it was impossible to cross the river. Yang Guang raised money and built this bridge. The sturdy Eighteen Cableway Bridge has ensured smooth communication between Xicheng and the west bank of Fenhe River. Later, two more were built." Yang Xiong saw Yi Feng constantly looking at the city and introduced it to him with a smile. "Convenience to the people comes second. With these two bridgeheads, this big iron bridge can be blocked by one man and cannot be opened by ten thousand people. It also has a considerable protective effect on the defense of Taiyuan West City." Yi Feng commented and praised Yang Guang. I really like building these things. I built the Yangguang Plank Road in Tianmenguan, but I didn¡¯t expect it to be built again in Taiyuan.With such a sturdy bridgehead and chain bridge. It can be said that the two rivers and one canal outside Taiyuan City cut Taiyuan City and the land outside the city into seven or eight pieces, making the defense of the entire Taiyuan City more complicated. It increases the difficulty of attacking and enhances the ability of guarding. The three bridges built by Yang Guang on this river are also quite useful. Not only is it convenient to cross the river, especially the location he chose, a bridge is in the middle of the three cities, in the middle city of the city within the city. This allows the east and west cities of Taiyuan City to be connected, preventing them from being separated and attacked by the enemy. They can defend themselves across the river as one. You can communicate with each other at any time and provide quick support to each other. The other two bridges were built in the south of Taiyuan City, one in the southwest, not far from the mouth of Jinqu and Jinshui. Because the Jin Canal crosses the three cities from the west, this channel actually wraps up the southern part of the West City and becomes a larger moat. With this Jin Canal, only half of the West City is exposed to the enemy's attack range, which undoubtedly greatly enhances the defense of Taiyuan West City. Even because the three cities of Taiyuan are connected and the east and west reach the mountains on both sides, when the enemy attacks Taiyuan, basically only the north is within the enemy's attack range. If you want to attack the south, you have to climb the mountain from both sides. Jinshui and Jinqu formed a Y-shape, adding another blockage. At this time, the Yurang Bridge in the southwest was the only bridge that must be passed by the center of the attack to the south. And after crossing the Yurang Bridge, you can only attack the south side of the West City, because there is a Fenhe River running through it from north to south. If you want to attack the south side of the East City, you have to cross the Fenhe Bridge on the Fenhe River south of Taiyuan City. It can be said that Taiyuan City is really well built for defense. It is blocked at the northern end of the Taiyuan Basin. It is connected by three connected cities and pushed directly to the east and west sides of the mountains, blocking the entire large channel. Then the Fen River passed through it, dividing the north side of Taiyuan City into two large pieces. Several more cuts were made through Jinshui and Jinqu, and coupled with the selected locations of the two river bridges in the south, the entire Taiyuan City formed a three-dimensional defense circle. Just like the layout of Taiyuan City Linked City, it is a city connected city, a city within a city. Even if the enemy attacks, they will be depressed to find that they have only broken through the first layer, and there are still layers of defenses waiting to be broken. . And this kind of connected and functional layout makes it okay even if a hole is broken during an offensive and defensive battle, there is still a second or even third layer of defense to protect it. Just like those ships with watertight cabins, the cabins are designed into cabin areas that are not connected to each other. Even if one leaks, it will not affect other cabins, greatly improving safety. The same is true for Taiyuan's defensive style. Through rivers, iron bridges, and urban areas, the entire Taiyuan is divided into several layers and many blocks in the innermost layer. This in-depth defense system allows the defenders to fight to the end. For a moment, the defense is strengthened to the maximum extent and the difficulty of the attack is increased to the maximum extent. "Only the Pujin Bridge on the Yellow River in Puzhou, connecting Hedong and Guanzhong, is more majestic than this bridge." Yang Xiong was also very impressed. Yi Feng nodded. He crossed the Pujin Bridge when he came back this time. The Kamatsu Bridge is larger and longer than this bridge. It is also an iron cable bridge. On both sides of the bridge, large iron oxen are used to tie the large iron cables, and wooden boards are laid on it. But the span of the Pujin Bridge is longer, and there is another feature of the Pujin Bridge, that is, the bridge has a sandbar in the center of the river, and then a bridge-in-the-bridge castle was built there, a castle in the river that is stronger and more dangerous than the two bridgeheads. , guarding the Kamatsu Bridge. Built on the sandbar in the center of the river in the middle of the bridge, it is naturally more secure than the bridgeheads built at both ends. Taiyuan City has twenty-four gates, but there is no entrance from the north. Because Taiyuan City has three connected cities, the middle city is the smallest and only connects the east and west cities. Xicheng is the most prosperous and bustling place, and the General Manager's Office is also located in Xicheng. There are also three cities in the West City, but they are not connected from east to west but in a finished glyph, or inverted glyph. To the north are Cangcheng and Xincheng. To the south of the Jin Canal that crosses from east to west is Daming City, which is Taiyuan Prefecture. The core of the city, the General Manager's Mansion is located in Daming City. Yi Feng and his party went from north to south, from the long and narrow passage on the west side to the front of Jin Canal, crossed the river via Yurang Bridge and went around to the south of Taiyuan City, then entered the West City, and then entered the southern inner city of Taiming, one of the three inner cities of the West City. city. After entering the west bridgehead of Yurang Bridge, Yi Feng specifically asked to climb up the tall arrow tower on the city gate and look at the southwest corner of the West City directly opposite the other bank. Standing high, you can see far. Yi Feng climbed up and admired the beautiful scenery of Fenhe River and Xicheng. Li Mi, Liu Wenjing and others were trying hard to observe some details in Xicheng, looking for any abnormalities, such as soldiers and horses. Ambush or something like that. (To be continued) Chapter 416 The Second City in the World: