The Red River is regarded as their mother river by the people of Annam, she originates in China, flows through Annam, the entire northern water system of Annam is almost connected to her, she meanders hundreds of kilometers, at this time it is in the flood season, the water is turbulent, the river is wide, she flows through the river, from the surrounding of the river to spare a big bend, the river is half enclosed, like a great mother embraces her child in her arms.

As a result, the Red River became a natural defensive barrier for Ha Fu, and any army attempting to capture Ha Fu from the ground would have to cross this moat before entering the city, but this was by no means an easy task.

The Gaoping Brigade occupied Yong'an, pursued the defeated Yongfu Brigade, and drove them across the Red River, but failed to seize the Yonghe Bridge at the first time, and the bridge was blown up by the order of the commander of the Yongfu Brigade, and the Gaoping Brigade was blocked on the west bank of the Red River.

Even so, for Gao Longkai, the commander of the Gaoping Brigade, he thought that this was not a problem, he transferred the engineer troops, while ordering his subordinates to strengthen the attack on the other side of the river, while stepping up the erection of the pontoon bridge, at the beginning, with the cooperation of several helicopters left by the army aviation brigade, everything went smoothly, they first suppressed the opponent's counterattack with strong firepower, so that the opponent's defenders could not raise their heads, taking advantage of this work, the sappers successfully pushed the pontoon bridge into the water, began to extend forward, and the armed helicopters were on alert in the air to protect, Excluding the fire interference of the defenders, with the advance of the two pontoon bridges meter by meter, the pressure on the defenders is also increasing, there are no reinforcements behind them, there is no air supremacy in the sky, the commanders sent requests for help to the headquarters again and again, but there is only one reply - insist, hold on, and the reinforcements will arrive soon.

But the reinforcements they had been waiting for were nowhere to be found, and as time went on, their confidence began to take a heavy hit, but they were still struggling to support and guard the sacred capital in their hearts.

But just when the pontoon bridge was about to reach its shore and the defenders were about to face the final blow, the gunships in the sky suddenly pulled up, flew directly over the heads of the defenders, flew towards the city of Hefu, and evacuated the battlefield here.

The suspicion left in the hearts of the defenders was that this must be the last attack of the rebels, and the situation in Ha Phu was already very critical, but without the cover of these iron birds, the pressure on the defenders dropped sharply.

A soldier poked his head out of the trench with a ghostly head, his position was diagonally facing the river, a small dirt slope blocked his side, so that he was not hit by a bullet from the front, he reached out and dragged a bazooka from behind him, resisted it to his shoulder, a companion stuffed a rocket into it, he aimed a little, I don't know if he was too nervous or confident, he quickly pulled the trigger, the rocket warhead with a puff of green smoke, flew straight to the river, "boom", the warhead was wrong, It hit the middle of one of the pontoon bridges, and the pontoon bridge, which was about to be completed, broke in two in an instant.

The defenders could not help but let out a burst of cheers, and every small victory boosted their morale, and the commanders clearly felt this momentum, and they moved with the momentum and shouted loudly: "Brothers, fight back, fight back." ”

They took the lead, took up their weapons, and launched an exciting counterattack against the river, which slightly repelled some of the rebels' advances, and the pontoon bridge was not successfully built, and the defenders once again gained a little precious time.

There was a small and strange sound in the sky, and some people were aware of this penetrating sound in the continuous explosions, and they looked up at the sky, and a group of black dots were slowly flying towards this side.

"Planes, planes, ours" the defenders roared in surprise as they cheered for the arrival of air support that had been waiting for a long time, symbolizing that they were about to get out of their hardest predicament and that the balance of victory was finally beginning to tilt in their favor.

On the contrary, the rebels were dumbfounded, they did not know why the opposing air force could come so quickly, because several military airfields and their facilities in the surrounding area had been blown up by the army air brigade, and the air force far south would not have arrived so quickly.

Looking at the rain of bombs in the sky, the hearts of the rebels were instantly overshadowed by a lingering shadow, and a sense of frustration that was gone made them frustrated and disappointed.

The pontoon bridge was blown up, the beachhead was blown up in a mess, the rebels were scurrying with their heads in their hands, looking for cover to hide, the anti-aircraft artillery fired uselessly, but did not hit a target, the last few shells fell into the position of the anti-aircraft artillery fire, and in an instant, the position was full of fire, mourning was everywhere, countless corpses were floating on the surface of the Red River, and the original yellow-red river water turned ochre-red.

The same scene appeared to the east of Ha Phu, and before that, the Lang Son Division had achieved even more fruitful results than the Gao Ping Brigade, they had already routed the defenders and built pontoon bridges, but just as the troops were preparing to cross the river, the government's air force suddenly arrived, and it was also a ruthless bombardment, and the results of the Lang Son Division were wiped out in the fire and explosions.

A small part of the rebels who had already crossed the river were dumpled by the defenders who had counterattacked, and the defensive positions were returned to the hands of the government forces, and with the repeated bombardment, the Lang Son division was forced to retreat, temporarily abandoning the beachhead, preparing to wait for the Quang Binh brigade to take over the Chinese army, and then organize a second round of attacks.

But at this time, the Chinese army has collapsed, Huang Wentao has no intention of letting go of his former hardcore subordinates, the most trusted people betrayed themselves, which no one can bear, after the first round of strikes, the returning planes with the help of ground crews, reloaded and refueled, the pilots almost did not get out of the cabin, and the second round of attacks began.

In accordance with Nguyen Thanh Giang's instructions, the Quang Binh Brigade built two pontoon bridges over the Red River, which was more than 30 kilometers away from Ha Fu, in order to prepare for the Chinese army to withdraw from the area from Bac Giang to the Red River, where the water network was intertwined, so as to prevent the remaining light and heavy armored troops from being attacked from the air again.

The Quang Binh Brigade threw all the heavy equipment to the Lang Son Division, and let the Lang Son Division attack Ha Fu with these equipment, while the Quang Binh Brigade all went into battle lightly, threw off all the burdens, covered the engineering troops, and quickly met them at the agreed position.

They were divided into three waves and bombed in turn, just to blow up all the capital of Nguyen Chengjiang.

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