Kublai Khan rode a war horse, surrounded by more than a thousand cowardly Xue and more than a dozen Mongolian generals, and rushed to the city in only a quarter of an hour. Kublai Khan reined in his mount three miles south of the city, and then looked at the triangular fortresses in front of the gates south of the city.

The triangular fortress was clearly newly built, and the surface of its cohesive façade puzzled the generals, saying, "Could it be carved out of a whole large stone?" But how did the stone, which was so big, get to the Daimyo's Mansion? ”

Someone else said, "It can't be carved out of stone, it should be made of fine clay and glutinous rice milk." ”

"Isn't that just a shelf?"

Kublai Khan looked at it for a long time, but he couldn't figure out what was going on - in fact, the outer walls of these triangular forts were all poured with cement and stones from the Ming Prefecture. As for this cement, of course, Chen Dexing opened a golden finger and asked people to mix limestone and clay, which are very common in Mingdu Mansion, and then roasted it. However, Chen Dexing had never learned to burn cement, and only knew a rough idea, so he only proposed a general method, and asked Tiandao Academy to organize repeated experiments before burning the first kiln of cement last summer. The cement that was produced first was transported to the Daimyo's Mansion to build a castle to protect the castle gates.

Kublai Khan waved his hand, and several craftsmen behind him had already pushed up a three-bow bed crossbow with four wheels, and a huge arrow had already been loaded on the three-bow bed crossbow. Several craftsmen pushed the three-bow bed crossbow slowly forward, until it was four or five hundred paces away from the fortress, and then aimed the bed crossbow at the fortress, hooked it with a giant axe, and shot a huge spear-like arrow at the fortress.

The Giant Arrow is still in flight. A flash of light suddenly appeared from above the fortress, and then an iron ball flew towards it at a speed visible to the naked eye. It slammed into the ice-covered ground near the three-bow crossbow. It bounced up again and continued to fly for some distance, and finally landed in the snow twenty or thirty paces away in front of Kublai Khan's horse.

Kublai Khan didn't even raise his eyebrows. Just holding up the telescope and staring at the outer wall of the triangular fortress, the huge arrows fired by the three-bow bed crossbow actually only rubbed a few sparks on the outer wall of the fortress, and it was laid out in an inclined plane - not only the inclined plane caused by the triangular appearance, but the wall out of the fortress was not perpendicular to the ground at 90 degrees, but a slope at an angle of 75 degrees, wide at the bottom and narrow at the top, and bounced open!

"What kind of wall is this!?"

A few Mongolian heavyweights who were also holding binoculars in their hands gasped and shouted.

"The three-bow bed crossbow can't be moved, this wall isn't made of iron, right?"

"Surely it can not be made of fine mud!"

"It seems that bombardment with camel guns and stone generators is not necessarily useful......"

"How is this city going to play?"

"Set up a ladder. Build a punching car! ”

"No...... This fort is triangular, and can only be fought from both sides, but that would leak the side back to the thieves on the city wall. ”

"That's right, this fortress is triangular, if you hit it from both sides, the back will be exposed to the thieves on the city wall, if you attack the city wall directly, the side back will be exposed to the thieves on the fortress!"

Several of the Mongol generals were old in war, because they had been fighting with the Southern Song Dynasty before. All of them are siege warfare experts. Now just by looking at it, you know that the Daimyo's Mansion Castle is difficult to fight. Although this daimyo castle is not a so-called fortress, the construction of a triangular cement fort at the gate of the city also gives the castle a defensive effect similar to that of a fortress. The defenders on the triangular fort can cross fire with the defenders on the walls. Whether the attacking side is attacking the city wall or going out of the fort, it will face the enemy on the back of the belly. The only feasible way is to destroy the fort with fire. But where did the Mongols have such firepower? The most powerful weapon in their hands was the Heavenly Thunder Arrow, but the outer wall of the triangular fortress was too hard. The Heavenly Thunder Arrow can't penetrate at all!

The crowd argued, but Kublai Khan did not say a word. After being silent for a long time, he spoke: "What is the movement of Hejian and Guangping roads?" ”

"Returning to the Great Khan, nothing unusual has been found." There was an immediate return from the Mongol generals next to it.

Hejian and Quang Binh are now under the control of the Ming Dynasty, and the Eight Banners of the Four Banners operate on the territory of these two prefectures. Not to mention that the territory is impermeable, it is also a tiger's den for the Mongolian horse exploration and ranger. However, the Mongols still ignored the losses and constantly sent small groups of cavalry to invade Hejian and Quang Binh for reconnaissance.

However, after many days of exploration, no signs of the Ming army moving south.

"No movement......," Kublai Khan muttered, and looked at the triangular forts outside the gates of the Daimyo's Mansion - there were obviously cannons on them. There must have been cannons on the walls of the Daimyo's Mansion. If the Mongols attacked, the cannons on the fort and the city walls would fire shotguns, forming crossfire, and there was not even a dead end for shooting!

Kublai Khan shook his head, it seemed that it was impossible to storm the city of the Daimyo's Mansion and force the defenders of the Daimyo's Mansion to send elites to break through the siege and ask for help.

This Daimyo Mansion is not something that the Mongols can fight at all, so Chen Dexing will not rush to the rescue, he must want to wait until the veterans of the Mongol division are tired, and then wave his army south...... That's at least a few months away!

Chen Dexing can afford to drag it, but the 180,000 Mongolian troops outside the city of Daming can't afford it, and they have to consume tens of thousands of stone grains every day, even with men and horses.

And that's not counting the huge consumption of military rations on the way to transit!

If the war dragged on for several months outside the Daimyo's mansion, the supply of Kublai Khan's army would be in serious trouble.

Seeing Kublai Khan's thick eyebrows tightening tighter and tighter, Liu Xiaoyuan understood the thoughts of this Mongolian Great Khan. Immediately, he stepped forward, came to Kublai Khan's side, and said in a low voice: "Great Khan, it seems that the famous city is difficult to attack, even if it is besieged, Chen Dexing will not rush to rescue." For now, the only way to do this is to continue to go north! ”

"Going north?" Kublai Khan's brows tightened even tighter, "Go north to Yanyun?" ”

When the Mongol generals around Kublai Khan heard this, they all had solemn expressions - went north to Yanyun to die? Chen Dexing's troops are probably more than 100,000, and they are well-equipped and have high morale.

Kublai Khan was silent, as if he was thinking hard. Liu Xiaoyuan said: "Great Khan, instead of fighting under the city, it is better to go north to Guangping and Shunde, and approach Zhending." Now Zhending Mansion has great signs of recovering its former prosperity, and last year Chen Ming divided more than 100,000 refugees from the Daimyo Mansion to Zhending for resettlement, and there were thousands of Shijue Granges in Zhending Mansion. If the Great Khan goes north, Chen Dexing will not disregard the safety of Zhending. ”

The Mongolian general Wuliang Hetai, who was following Kublai Khan, frowned deeply, and said in a low voice: "But it is really too far away from the Yellow River, I am afraid that the army will not be able to withdraw in time!" ”

"You can make some preparations in advance," Liu Xiaoyuan said, "You can hoard heavy grain and grass in Anyang and Qi County, and the army can travel lightly." Once the thief went south, he immediately retreated to Anyang and then retreated to Qi County. ”

A real army is composed of various arms and logistics transport teams, and it is not the fastest light cavalry among them that determines the mobility of this large army, but the mule and horse carts loaded with grain. If most of the grain and grass were to be placed in the castle in the rear, the mobility of the army would of course be greatly enhanced.

But the grain and grass hoarding land that was placed in the rear must be guarded!

Kublai Khan glanced at Wuliang Hetai, frowned and asked: "Transfer the grain and grass baggage to Anyang, and use a team of 10,000 people to guard it." The army only took the 20th day of food and went north to Zhending...... Leave another 30,000 troops to monitor the Daimyo's enemies, and guard the direction of Kawama and Yidu. Wuliang Hetai, what do you think of this arrangement? ”

……

South of the city of the Daimyo's mansion, the Mongolian army camp, in the tent of Liu Xiaoyuan.

"Kublai Khan is going north to Zhendingfu! The grain and straw will also be transported to Anyang County for resettlement, and there is a team of 10,000 people to guard it. Liu Xiaoyuan was talking to Liu Yang in his tent.

Liu Yang is no longer dressed as a lama, but in a Mongolian leather robe, with short black and dense hair on his head, and he is a monk who is still in the army. His public identity is Liu Xiaoyuan's distant relative, and he took refuge in Liu Xiaoyuan as a close entourage. This was not uncommon in the armies of various countries in the 13th century, and it was also in line with Liu Xiaoyuan's status, so no one doubted it.

"What? Kublai Khan is going to Zhending? Don't hit the daimyo anymore? ”

Liu Yang was startled for a moment and looked at Liu Xiaoyuan fixedly. Liu Xiaoyuan lowered his head, holding a wooden stick in his hand, fiddling with the fire pit inside the tent, and there was an iron pot hanging from the fire pit, and what food was boiling in it, wafting out an attractive aroma.

"Don't play the big name anymore...... This morning's trial was made, and the three-bow bed crossbow could not penetrate the outer wall of the triangular fort...... What material is this made of? How strong is it? ”

"Cement, that's called cement."

"Mud in the water?"

"No, it's a specialty of Mingdu Mansion, powdery, muddy when exposed to water, and the water is as dry as a stone."

"And this kind of thing?"

Liu Xiaoyuan smacked his lips and shook his head again and again.

Liu Yang's mind was already all on the changes in the military situation, and his heart was tumbling, thinking about the consequences of hundreds of thousands of Mongolian troops going north to Zhending, Zhending Mansion did not have a fortified city like the Daimyo Mansion, and there would not be too many defenders.

Liu Xiaoyuan suddenly lowered his voice again, "The purpose of the Mongols is to lure the enemy south!" However, the most difficult thing in all the things of the military is to determine the enemy's situation, Kublai Khan does not dare to fight now, and it is difficult to accurately determine the strength of the enemy soldiers without fighting! If the Ming army could show strength to the enemy, Kublai Khan would definitely retreat! In addition, there is also an opportunity to take advantage of the grain storage place in Anyang. ”

Liu Yang thought for a while and looked at Liu Xiaoyuan, "When can I leave?" ”

"When Kublai Khan's army is ready," Liu Xiaoyuan said in a low voice, "it was the most chaotic time, and you disguised yourself as a cowardly of the Mongols, and the horses, fish scale armor, and command flags would be prepared for you." Be careful on the road, there are a large number of Eight Banners soldiers in Hejian Province, don't let them be killed as Mongolians! (To be continued......)