"Have you ever thought about why Li Xia came to Hancheng?"
This is a question that Shi Tianze often asked the generals since the war began.
There are many answers.
For example, further north of Hancheng is the Loess Plateau and the Luliang Mountains, and the terrain is steep. Hancheng can be regarded as the northeast corner of Guanzhong, so Li Xia defended Hancheng and played a chess game to occupy the most critical corner first.
For example, after the Yellow River passes through Yumen in the upper reaches, the river surface suddenly opens up, and the ice surface in the south is thick enough. Only the section from Hancheng to Heyang can cross the river on ice.
In Heyang Camp and Hancheng, Li Xia has to guard one...
"Yes, but why did Li Xia come to Hancheng?"
After getting many answers, Shi Tianze still asked.
"Why doesn't Li Xia guard Chang'an? He could have sent a general to garrison Hancheng, sit in Chang'an, and make arrangements from the center. In this battle, our army will attack with five armies. Each army is far stronger than his. He only needs to break through all the way.
He is bound to be defeated. In this case, he should be in the middle and take charge, why should he stand alone all the way?"
"As for Li Xia, who defended Hancheng alone, he was just like that. After fighting for so long, we haven't seen the difference between him personally guarding Hancheng and sending a general to guard it."
"..."
With these doubts, Shi Tianze, who commanded the 70,000-strong army of 17 Routes, refused to do his best in the face of Li Xia's weak Yellow River defense line.
He Bichi urged him very urgently, but Shi Tianze patiently explained, thinking that it was stable.
Although Zhang Hongfan raised objections, Shi Tianze believed that all princes wanted to maintain their strength and would support him in a steady and steady attack.
He was wrong.
This Western Expedition was different from the pacification of Li Fen. The generals leading the army this time were all the younger generation selected by Kublai Khan. These young generals thought more about making achievements rather than preserving their strength.
Moreover, Li Xia's line of defense was not only weak, but he actually dispatched soldiers and horses to support other places.
Everyone was urging Shi Tianze to order a general attack.
Finally got to this point.
Shi Tianze stood on the chariot. Wherever he looked, the soldiers under his command surged toward the small Hancheng like a black wave.
It was like a huge wave was setting off, trying to smash a small raft into pieces.
When the waves push up, the little raft looks so fragile and fragile...
Shi Tianze couldn't help but become a little confused, and secretly thought that he might have been worrying too much, as this was how Li Xia came to Hancheng to die.
At this moment, the chariot shook.
As if there was going to be thunder, a dull sound came from the ground, rumbling.
Shi Tianze then raised his telescope and looked north.
To the north are continuous glaciers, and a line of soldiers spread out, with no end visible to the naked eye.
If I had to talk about the end, perhaps it would be Yumen.
The Yumen Gate is said to have been dug by Dayu. The two mountains face each other and look like they were cut with an axe. The broken wall sandwiched the Yellow River and was only a hundred paces wide.
When it is not frozen, the Yellow River rushes out of the canyon and the sound shakes the mountains and fields. It is said that "there are three strong waves in Yumen and a thunder on the flat ground".
Yumen is also called Longmen, which is exactly the dragon gate where the "fish leaps over the dragon gate".
In December every year, Longmen is sealed by ice, and the ice disappears in March of the following year. When the ice disappears, yellow carp will swim here and jump around. Once they climb onto Longmen, clouds and rain will follow.
It is also one of the eight scenic spots in Hancheng, the so-called "Yumen Spring Waves".
Yumen is not only famous for its ice-free scenery, but also occasionally suffers from freezing floods.
Freezing floods are when a certain river section suddenly opens up, melting ice and stored water wrap around the ice and rapidly release. However, the downstream has not yet thawed, and is pushed by the river water upstream, causing the river to open, ice dams to block, and the water level to rise sharply.
Of course, it is only the twenty-second day of the first lunar month, and it is still early for the third month of the Jingzhe.
Shi Tianze originally had a lot of time to slowly and steadily consume Li Xia to death, but today he has not used up this time yet.
"Rumble..."
The sound was very loud and dull, as if it was covered by something, but then it continued and became louder and louder.
"Rumble..."
"what happened?"
The chariot under his feet was shaking more and more violently. Shi Ge and Shi Ji roared and rushed up, tied up Shi Tianze and tried their best to pull him down to the chariot.
The thunder in the sky was getting louder and louder, but Shi Tianze seemed to be deaf and couldn't hear what Shi Ge and Shi Ji were shouting at all.
I don’t know where the sight tube fell.
It doesn't matter whether you stand high enough or not, and whether you hold a telescope or not.
He was dragged and looked north. He saw the sky full of wind and snow, and all the Mongolian troops in the wind and snow were already pushing and running towards the east bank.
"boom!"
Cracks have appeared on the ice...
Shi Tianze finally understood why Li Xia came to Hancheng.
Because there is a "Yumen Spring Wave" in Hancheng, the ice in Longmen melts and the snow melts, forming a flood that swallows up thousands of troops.
Only when Li Xia came in person would he be attracted by the big flag with Li characters and push all his troops to Hancheng and under the overwhelming Lingxin.
Li Xia was basically using his life to attract the Mongolian army to attack the most dangerous place.
It was another move to lure the enemy into ambush. He had already foreseen it and would not have been fooled.
"You have mistaken me! You have mistaken me!"
Shi Tianze was furious.
He was angry at He Bichi, Zhang Hongfan and others urged him to join forces to send troops, and angry at himself for failing to stick to the original strategy.
But no one cared about this anymore, the sky was full of panicked shouts.
The ice floes in the upper reaches have hit the ice surface in the lower reaches. The explosion sound continues, and the entire Yellow River ice surface may crack.
"Run! Run!"
"..."
~~
A yellow dragon rises from under the ice.
It still had a month of slumber, but was awakened by the explosives, so it roared angrily, bared its teeth and claws, and slammed into the dragon gate.
"boom!"
It didn't smash the gantry, but jumped out of the gantry, quickly enlarged its body, and heavily lifted the ice in front of it and smashed it down.
"boom!"
The ice was cracked and rolled up by it, and Huanglong continued to roar and rushed downstream. It kept smashing the ice and kept arching its body...
Not Huanglong.
When it rushed a little closer, people watching this scene from a distance could see clearly that it was not a yellow dragon, but the rushing water of the Yellow River.
The Yellow River comes from the west and reaches Kunlun, roaring thousands of miles and touching the Dragon Gate.
…
Li Xia stood on top of Hancheng City and watched.
This was a long-planned ambush.
It wasn't Shi Tianze who came to sneak attack him. Even if Shi Tianze sent troops on the night of the first day of the first lunar month, it wouldn't be considered a sneak attack.
Because Zhang Jue had told Li Xia long ago that "the Mongolian army might cross the Yellow River on ice," even Zhang Jue said, "I'm really afraid of winter."
Therefore, spring should start early so that the ice on the Yellow River will thaw.
What to do if spring doesn't start? Blast the ice.
The reason why I came to Hancheng was to bomb the Yumen section.
There are high mountains on both sides of Yumen, which is not a place for the Mongolian army to cross the river, and the river water under the ice is very fast.
The purpose of exploding ice is not so much to cause freezing floods, but to "prevent freezing floods". The explosion is carried out in a narrow section of the river at an appropriate time before thawing, so that the water can drain smoothly.
Although the gunpowder used by Li Xia, improved by Hao Xiuyang, was far more powerful than the current generation, it might not be able to blast open the river in the Jiuyuan City section of the Yellow River further north. As for the rivers further north, it would be even more difficult.
Of course, specific cases need to be analyzed on a case-by-case basis, and the ice-explosion of the Yumen section of the Yellow River depends on the time.
When the weather is cold, the ice is too frozen to be exploded. But in February or March, it can crack on its own without exploding.
The key is to grasp the portion and timing.
It should have been more than half a month later.
But the situation can no longer be postponed until then, so Li Xia actually said that sentence with a helpless tone today.
"Let's order it, order it all at once."
It's a bit regretful.
The effect Li Xia originally wanted was for the ice floes upstream to crush the ice downstream. However, it was still early in the season, so this effect would not be achieved.
Even so, the Yellow River has shown sufficient momentum.
This is the power of heaven and earth.
Even if the river just turns over, it can make people look like ants.
The explosion had not stopped yet. Regardless of whether it could break the ice or not, Li Xia at least frightened the Mongolian army.
The golden sound of the Mongolian army had already sounded, and Shi Tianze's banner immediately moved to the east bank.
No one could guarantee what would happen if they stayed on the ice, so they ran towards the east coast like crazy.
Seeing this scene, Li Xia truly breathed a sigh of relief.
He had no control over how much the ice could break, but he could defeat the enemy and expand the results.
Li Xia gave the order directly, quickly got off the city wall, and got on his horse.
"Go out of the city and kill the enemy."
The Song Army drummer immediately started playing the drum.
The explosion in the distance had not stopped yet. The drummer tried his best to beat the loudest drum sound, but it still seemed so weak in the thunder in the sky.
The Song army no longer defended the city, but actually attacked the Mongolian army outside the city...
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