The coalition forces of the Xi tribe and the Mohe tribe were forced by the Tang Dynasty to lead the battle, because they were just cannon fodder for the servant army, and they would not need to spend pensions if they died anyway. Therefore, it is a very good choice to let them test the enemy's strength. If you let your soldiers test it, not only will they have to sacrifice their own lives, but they will also have to bear the pension after the sacrifice. This is why many governments like to use servant armies and even use various consumables to attack cities. As for the next step, that is to let the servant army of the Xi tribe and the Mohe tribe test the strength of this enemy so that they can make some preparations. ¡°Woooooooo¡¡± The coalition forces of the Xi tribe and the Mohe tribe began to charge. They obviously wanted to attack the city first. "Kaka!" The coalition forces of the Xi tribe and the Mohe tribe set up the ladder, and then prepared to climb up from the bottom of the ladder, because this is also a common tactic for sieges. However, this tactic did not seem to be very effective, because the city wall of Liaodong City was very high, and the ladder did not reach the tower of the city wall for a while. ¡°Throw all the rocks and trees at me!¡± Yeon Gaesumun shouted. "Ta!" "Ta!" "Ta!" The rolling stone was thrown down as if it was free of charge, and it ended up smashing all the ladders. The coalition forces of the Xi tribe and the Mohe tribe behind were still attacking the city, but this time they changed to a higher ladder and tried to climb up. The Goguryeo troops on the city wall were even more ruthless and poured gold juice down on them. "Smash it!" Pots of hot golden juice were thrown and splashed down. Countless Xi tribe and Mohe tribe's coalition forces were hit by the golden juice and screamed in agony. The so-called golden juice is boiled dung water. When poured down, it can not only injure the enemy through the scalding temperature, but also infect the wounds through the dirt in the dung water, and then make the soldiers sick. It would be even more wonderful if it caused a plague in the enemy's camp. Therefore, this golden juice can be said to be a very sinister weapon. The armies of the Xi tribe and the Mohe tribe were seriously injured. "Emperor of the Tang Dynasty. Can we withdraw our troops?" the leader of the Xi tribe asked. But Li Shimin said: "Don't worry, attack again and see!" At this time, the Xi tribe's simple catapults also started to work. The Xi people found that they could not climb the ladder, and then they thought about using a catapult. In fact, catapults are not very rare things. Many people think that they were invented by Liu Ye in the late Eastern Han Dynasty, but this is simply nonsense. The catapult is actually a fixed catapult that originated in primitive society, and then evolved into a mobile catapult. As for the catapult, it was invented as early as the pre-Qin period, and the Chu army also equipped it in large quantities. Therefore, catapults are not unusual. Therefore, even ethnic groups in places like the Mohe people have a small number. " Moreover, Datang currently does not have high enough trust in cannons, and the cost of missiles is too high to be used to attack fortified cities, so Datang is still equipped with catapults. But now the catapults have also been lent to the coalition forces of the Xi tribe and the Mohe tribe, allowing them to attack the city. "Bump!" A huge stone hit the wall of Liaodong City, but they found that it did not cause much damage on the wall, but the huge stone was bounced up. This made them suspicious. According to the past situation, the city walls were also built with bricks. If such a big stone is thrown down, it should have some effect. But now such a huge stone has no effect at all, which makes them a little confused. "Good guy. These grandsons actually used bluestone to make the city wall. Even if it's just the outer layer, I'm afraid it's surprising!" an engineering staff member of the Eastern Expedition Corps' service department said in surprise. And everyone was shocked. These Goguryeo people were so crazy that they actually used bluestone to build city walls. Bluestone is also limestone. In ancient times, it could be said to be one of the hardest stones. In ancient times, most city walls were built with bricks, and bricks were sintered from clay, and their hardness was not as good as bluestone. And these Goguryeo people actually used bluestone to build the city. Even if it is just a layer of wrapping on the outside of the bricks, it will be enough to make the Goguryeo city walls much harder. Therefore, this catapult is of little use against this kind of bluestone city wall. Instead, the stones are bounced up. Even Chang'an in the Tang Dynasty did not have such luxury, because the cost of processing bluestone was very high. There were no explosives in ancient times, so it was very difficult to mine bluestone, and the labor cost remained high. Therefore, even Chang'an only switched to bluestone after the invention of gunpowder, because gunpowder can obtain bluestone by exploding mountains, which greatly reduces labor costs. "If you want to conquer this city wall, I'm afraid you have to rely on human lives to fill it! This is really a damn turtle shell!" Jing Wen sighed and said. ????????????????????????????????????????????????The leader saw this scene and obviously said immediately: "Emperor of the Tang Dynasty, we should retreat quickly!" But Li Shimin said: "Continue to attack and see what other methods they have not used!" The leader of the Xi tribe could not defeat Li Shimin. Then he could only watch helplessly as his tribesmen troops continued to attack and suffered constant casualties. Li Shimin and Jing Wen would not be heartbroken anyway. Next, the 10,000 Xi tribe and Mohe tribe coalition forces immediately began to attack, obviously hoping to fill the city with human lives! But Yeon Gaesomun on the city wall hummed: "Want to test your life to fill the gap? Let me tell you, your lives are worthless, let's see how I kill you!" "Pierce your heart with ten thousand arrows!" Yeon Gaesomun shouted. road. Soon, hundreds of people began to operate in a mechanism behind the city wall. After that, the soldiers of the Xi tribe and the Mohe tribe continued to attack, and did not see any changes behind the city wall. And those Goguryeo soldiers who used the so-called Thousand Arrows to Pierce the Heart also took out hundreds of arrows at a time, placed them in a trench, and then spread them flat. Then they started shooting at the Xi and Mohe soldiers outside the city. "Swish, swish, swish" Hundreds of arrows were shot out at the same time, and then the soldiers of the Xi tribe and the Mohe tribe suffered heavy losses, with hundreds of people lost at one time. And the leader of the Xi clan was bleeding in his heart when he looked at this situation. It was obvious that these losses made them extremely painful. "Emperor of the Tang Dynasty, withdraw your troops quickly!" the leader of the Xi tribe begged bitterly. "Retreat!" Li Shimin finally relented. Soon, the soldiers of the Xi tribe and the Mohe tribe retreated back. (To be continued, please search Piaotian Literature. The novels will be better and updated faster!