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In the night, the banks of the Han River are blown by the breeze, the grass rustles, and the moonlight shines on the river.

Zheng Yunming held a speculum and looked at the Han River, when there was no telescope as a tool before, only people with the special skill of night eyes could vaguely see the movement of the Han Water at night. In the Jing Chu army, only 6 followers and 6 masters can do it.

However, after the speculum is under the commander's head, anyone with good eyesight can see the general situation on the river from a distance when there is moonlight. The scouts deployed by the government made flexible use of this cutting-edge reconnaissance tool, and quickly set up lookout posts on the city towers and watchtowers that doubled the detection effect. Within a few days, the lookout post of the Great Song Dynasty "waited for the distance and near, waited for the hypocrisy, and the thief camp was not leaked in case of any leakage, although it was a single person, it was far away for several miles, and it could be investigated in detail." Zhao Kui especially loved the convenience of this kind of observation equipment, and after trying it, he immediately asked Zheng Yunming for ten of them, which were used by several henchmen and staff. He also urged Zheng Yunming to make 200 corpses immediately after the end of the war, as a tribute to the official family, and then distributed by the imperial court to the commanders of the major border regions.

How can it be so easy, Zheng Yunming put down the speculum and squinted at Zhao Kui, this maker doesn't know how high the cost of this small brass cylinder is. Just in order to find the appropriate curvature of the lens, I did not hesitate to hire 17 craftsmen to work day and night, experimenting with various curvature lenses, and then selecting the best one. The cost of optical glass is even more needless to say, so that Zheng Yunming sometimes wonders if he is the commander of the 10,000-strong army and the person in charge of the real power of the transfer department can eat all of Liu Tingmei's output. Of course, this price was set by himself earlier, and the speculum was indeed something that Jinghu Defense urgently needed, but he did not expect that Liu Tingmei was so keen on this kind of lucrative product that he actually sold his own grange to raise funds, and opened several glass workshops in Yueyang and Ezhou in the south of the Yangtze River to specialize in manufacturing optical glass.

When the country is in crisis, there will always be people who get rich because of this, but Zheng Yunming faintly feels that his various actions seem to be giving birth to the first batch of mature industrial and commercial giants in Chinese history, naturally, the scale of this giant can not shake any aspect of the Great Song Dynasty society for the time being, not to mention the imperial relatives and nobles in Lin'an City, even if it is the merchants who provide chickens, ducks, pigs, sheep, and rare treasures to the Xungui family, it is enough to compare any of them with Liu Tingmei and Cao Wenqi. But Zheng Yunming provided a new idea to the Jinghu heroes, and did not rely on the relationship with the government or the gold, silver and land to get rich, as long as they made good use of the innovative spirit of craftsmen, made a breakthrough in technology and formed a monopoly, the degree of making money was much faster. Once they have gained this momentum, although they are still weak, one day, they will grow into a force that the imperial court cannot ignore.

However, most of these will have to wait until after the war to slowly think about countermeasures, and the top priority is to first expel these Hu Lu, whose fighting spirit is still undiminished.

There was already a shadow of a boat in the Han River, and Zheng Yunming looked sideways at the incense burner, which was about the time of the third watch.

"Meng Puyu is really a person who believes in his word, and the agreed time is exactly the same." Zhao Kui put down the speculum and said to everyone: "Our army is also attacking!" ”

The flood and drought gates of Xiangyang were opened together, and the drawbridge creaked and creaked, and the victory in the previous fierce battle made the enemy dare not force the city wall too close. Once they approached the city walls, they were bombarded with trebuchets and cannons, so that the Song army's death squads no longer had to fight down the city like the Jin people. Instead, he opened the door in a dignified manner.

More than 1,000 crossbowmen, spearmen, and sword and shield bearers streamed out through a crack in the open door, each with a piece in their mouths, silently diving into the darkness of the night. But they weren't the protagonists of tonight's stage.

On the south gate, Bai Yijie carefully inspected the horse team that was about to go out, and there were a total of 500 cavalry attacking, including 120 cavalry of the Jing Chu army's own heart, 180 of each of the two armies of the White Army, and 20 envoys of their own personal guards, which can be said to be the essence of the entire Xiangyang defenders.

Zheng Yunming, and even Zhao Kuiken invested such a large amount of money to dispatch five hundred cavalry, just to send two light vehicles to the top of Wanshan Mountain. These two light vehicles were originally mobile gun mounts secretly driven by Zheng Yunming in order to drive field artillery. This is also one of the technical development projects of the Jingchu Army, the gun carriage is modified from a large car, and a large number of metal components are used, on the one hand, in order to increase strength, on the other hand, to reduce weight, so that the gun carriage can keep up with the march of the general infantry, and even keep up with the march of the cavalry, such a technology is not possessed by the current vehicle. Not to mention the kind of two-wheeled chariot that Zheng Yunming used at the earliest, needless to say, the two-wheeled chariot pushed and pulled by manpower was slow, and it was impossible to maneuver with the erratic cavalry. It is said that the recoil of General Copper and General Bamboo is also very different. General Zhu can shoot on the spot with a nail on the ground, and General Tong will handle it accordingly, and the entire chariot must fall apart. Therefore, it was necessary to develop a new type of gun carriage that could be towed by pack horses for the copper and iron generals, which in addition to being light and strong enough, also had detachable wooden stake feet to absorb the recoil of the copper general. The carpenters in Xiangyang were extremely satisfied with their new creations, and even gave this new two-wheeled vehicle the reputation of "a thousand miles of car".

However, the ten new gun carriages that were so carefully built were two of them taken away by Zheng Yunming. Each gun carriage was towed by three horses, and the contents carried on it were carefully covered with felt cloth. These two chariots and horses were the valuable supplies escorted by the entire five hundred cavalry. In other words, whether or not they could retreat from the more than 100,000 male soldiers outside the city was only on these two carriages.

"After leaving the city, sneak through the road, remember, time is life, if you can't send these two cars to Wanshan before dawn, and wait for the enemy cavalry to appear on you, the big thing will be over." Bai Yijie instructed with a solemn face.

Wei Zugui, who was dressed in the uniform of a hundred Mongolian households and tied up with a white linen cloth on his left arm as a mark, was the main general of this surprise attack, and the original meaning was that Zheng Yunming wanted to use Zhu Sheng to lead this cavalry team as a cavalry commander. However, Zhao Kui personally ordered Wei Zugui to lead this special attack team in the name of the commander of the Command of the Commanding Envoy. Obviously, in addition to considering that Wei Zugui's experience in fighting horses was far richer than that of Zhu Sheng, who was born as a scholar, the envoy did not have the implication of cultivating henchmen to get rid of his dependence on the Jing Chu army.

"So-and-so remembered." Wei Zugui clenched his fists and promised, and said: "This thing of the official is on the battlefield for the first time, and the most important thing is not to blind the brothers." ”

Bai Yijie said with a smile: "Although it burns in Shuangjing Nineteen, isn't it still enough to dispel the doubts of Commander Wei?" ”

"It's one thing to be at the proving ground, it's another thing to be on the battlefield." Wei Zugui smiled bitterly: "When the time comes, I only hope that the children will remember to light the torch and light it well." Zheng Guanren was so keen to rush new weapons into the battlefield, which was not necessarily a good thing for warfare. ”

Bai Yijie said seriously: "The officials are already reflecting on this matter, but this mission is really difficult to accomplish without this thing." Please use it with care. ”

Wei Zugui said yes and shouted to everyone: "All get on the horse and get ready to attack!" ”

Five hundred knights stepped on stirrups and mounted horses, and the five hundred men were all dressed in the Mongol army, and Wei Sheng and Han Feng each held a banner of the Mongol army at the forefront of the ranks. The cavalry came out quietly from the south gate, and all the mounts took off their bells, wrapped their hooves with straw, and headed straight to the south. Bai Yijie watched the last cavalry disappear into the night, and then ordered the city gate to be closed, and he went straight to the West Gate Tower where the envoy and Zheng Yunming were. At this time, there was already the sound of fire and shouts of killing in the distance.

Zheng Yunming saw the military division coming to the city, and knew that the team in charge of the special attack had already come out, so he sighed and said, "It's a pity that the feint attack team in front has always started earlier. ”

"No," Bai Yijie knew that there was something wrong just by hearing the shouts of killing from a distance. The usual night raids, in the sound of fighting, are also accompanied by the noise of the enemy due to chaos, panicked cries and alarms, and chaotic footsteps. This is a normal attack, and in the distance you can only hear the sound of shouting, swords and guns, and artillery explosions, which is obviously very abnormal.

He looked up, the fire was shining, and the place where the fight came from was the bank of the Hanshui River.

"Meng Puyu's people were ambushed." Zheng Yunming suddenly realized and shouted, "Why don't we organize a team of people to come to the rescue?" ”

Bai Yijie sighed: "It's too late, the Hu people obviously expected Meng Shuai's people to come and sneak attack, and set up an ambush in advance, even if it is too late to send rescuers from the city at this time." However, Meng Shuai understood the nature of this operation, and at least prepared for the enemy's ambush. We can only hope that Meng Shuai's temporary scheduling, maybe after Xiangyang's night attack team attacks, the pressure on them will be eased. ”

In fact, it can only be like this, no matter how Zheng Yunming stomps his feet anxiously, Meng Heng's surprise attack on the river has fallen into the trap of the enemy, and rushing to save it will only make the rescuers suffer together.

Zheng Yunming is not the only one who is anxious in the city. On the north bank of the Han River, Qin Wu at the head of Fancheng raised his eyes and looked out, and knew at a glance that Meng Hui's night attack had failed.

Zheng Yunming sent people to send wax pills to both Fancheng and Meng Heng's camp, but the envoys sent to Fancheng never found a chance to break through the blockade and reach Fancheng, so Fancheng did not know anything about the details of this operation.