In the early morning of May 2, 1215, after converging the 200,000 infantry of the Tenryu Legion, after a short rest, Haikubu ordered the army to move in the direction of Changmen Mountain and Dahong Mountain on the left and right sides of the Changmen Bridge, preparing for a strong attack.

After witnessing the destruction of the Nagato Bridge by the Beihai army, Haikubu hurriedly sent someone to transmit the news back to the rear as soon as possible. Of course, the deputy commander of the Far North Army temporarily concealed the fiasco at Leopard Mountain. Now, as long as Changmen Mountain and Dahong Mountain can be taken, Haikubu can be regarded as atonement. Otherwise, he would not have been able to eat and walk around with Dadali.

Dadali, the commander-in-chief of the Western Front of the Chengtian Empire, was deeply shocked when he learned that the Changmen Bridge had been destroyed, and at the same time, he immediately issued an order to Haikubu, asking him to reconnoiter the terrain of Changmen Mountain and Dahong Mountain and the specific deployment of the Beihai Army, and only need to launch one or two feints before the arrival of the main force. Obviously, before setting out on the expedition, "Pulsatilla" Dadali considered that the Mulan Army was likely to stop the action of the Chengtian army by blowing up the bridge. Therefore, Dadali naturally took into account the topographical characteristics of the two mountains on the left and right sides of the Nagato Bridge.

In fact, although Changmen Mountain and Dahong Mountain are not very steep mountains, the terrain is much more complex than Leopard Mountain. Defensive positions can be built at the foot of the mountain, on the mountainside, or at the top of the mountain. In other words, due to the terrain conditions, the cavalry units of the Chengtian Empire could not participate in the attack, and had to rely on the infantry to advance upwards layer by layer.

However, Dadali never expected that Haikubu would directly conceal the battle of Leopard Mountain. If Dadari could have learned about the battle of Leopard Mountain in the first place, then the veteran would have prevented Haikubu from continuing his assault. Haikubu's obstinate behavior eventually caused the Chengtian army to suffer one of the most painful defeats in the early days of the entire Beihai War.

On the morning of May 2, the low sound of the horn resounded throughout the Changmen Bridge area, and a group of Chengtian soldiers dressed in black armor, holding a full moon scimitar in their right hand, and holding a shield in their left hand came to the foot of Changmen Mountain and Dahong Mountain, looking at the sea blue flags fluttering above and the white figures that swayed from time to time. Behind these soldiers, tens of thousands of archers formed a huge phalanx, staring at the Beihai soldiers above, murderous.

Haikubu was standing at the forefront of the troops attacking Dahongshan at this time, and he pulled out his full moon scimitar majestically. Today's battle, Haikubu knows that it will be an extremely difficult and bloody battle. Therefore, in order to ensure the smooth attack, in the rear of the troops attacking Dahongshan and Changmen Mountain, Haikubu deployed 20,000 archers as cover to provide long-range fire support. And these archers happened to be the 40,000 cavalry who survived the battle of Leopard Mountain. In the first battle of Leopard Mountain, the 100,000 cavalry of the Far North Army, which was the vanguard, suffered heavy losses and its morale was seriously low. Haikubu knew in his heart that if he let these defeated soldiers attack again, it would not affect the outcome of this battle, so it was better to simply let them provide long-range fire support. Anyway, in today's battle, the cover of the archers is also very important. For Haikubu, if he can't take either of Changmen Mountain and Dahong Mountain today, he will be severely punished by Dadali.

The sun rose in the east, and Haikubu, who had no way back, raised the full moon scimitar in his hand and gave the order to charge. Chengtian's infantry had not yet moved, only to see a large wave of black and oppressive arrow rain from the foot of Dahong Mountain, and the archer position of Chengtian's army shot towards the position of the Northern Navy. The Beihai soldiers, who had been waiting for the battle, raised their huge shields one after another, covering themselves and their companions tightly. In the blink of an eye, the black-pressed bow and arrow landed on the large shield of the Beihai army, making a "plop" sound. However, Baimi was inevitably sparse, and some arrows happened to pass through the junction of the shield array of the Beihai army, making a "poof" sound into the flesh.

After three waves of strong bows and crossbows, Haikub and his men began to rush towards the positions of the Northern Navy. Because it was a back attack, the Beihai army naturally prepared a large number of rolling logs and stones as the best gift to welcome the Chengtian army. After the infantry of the Tianlong Legion began to charge, the Beihai army guarding the position at the foot of the mountain, except for a few soldiers, lowered their shields one after another and pushed out the rolling wood and stone in front of them. In the face of the rolling logs and stones, the dense charging formation of the Chengtian infantry suddenly dispersed, either alone or in groups of three or five, dexterously dodging the rolling logs and stones that were constantly rushing. Of course, no matter how you dodge, there will always be unlucky guys who will be smashed directly by those huge rolling boulders and shattered to pieces.

At the same time, as a backup, the archers corps composed of 40,000 cavalry of the Far North Army continued to launch a tidal wave of attacks on the Northern naval positions at the foot of the mountain. Round after round of arrows shot impenetrable towards the soldiers of the North Sea. Due to the need to throw rolling wood and stones, the defensive area of the shield suddenly shrank a lot, and the white figure was constantly shot into a sieve, and fell weakly.

"Damn, listen to me, prepare for melee combat, rush!" Seeing that the enemy's bow and arrow were firing faster and faster, a military general wearing white ice armor and holding a silver star sword gave the order to charge.

With the general's order, the Beihai troops stationed at the foot of the mountain jumped out of the temporarily dug stone ditch bunkers, or held spears, or swords and shields, and rushed down the mountain with a roar. Between the lightning and flint, the soldiers of the two armies collided together, and the sound of swords colliding, screaming, and angry scolding instantly filled the entire battlefield. Soon, blood flowed at the foot of Dahong Mountain, and the long-range attack of the Chengtian army finally stopped at this time.

The general who gave the order for melee combat just now was none other than Tian Zhennan, the commander of the 59th Army of the Mulan Legion, and was the immediate boss of Zhao Leihu, an ice soldier of the 133rd Division who died in the Battle of Liucheng. According to Han Youxin's deployment, the 59th Army was one of the core forces guarding the first defensive line. After the Battle of Liucheng, the Changmen Bridge area became the last line of defense that the 59th Army had to defend, and for Tian Zhennan, he had no way to retreat.

In order to effectively defend the Changmen Bridge area, Han Youxin temporarily formed the Longfei Corps before the war. The total strength of the Long Fei Corps is 100,000 people, and its troops are composed of 50,000 people of the Heiya Army, a pro-army under Long Fei's own jurisdiction, two divisions of the 59th Army, and troops of the 77th Army. Since the defensive terrain of Dahong Mountain was better than that of Changmen Mountain, Long Fei divided his Black Fang Army into two. 30,000 of them and the 77th Army guarded Mt. Nagato. He led another 20,000 horses and troops of the two divisions of the 59th Army to defend Dahongshan, which was even more dangerous. At this time, it was Tian Zhennan's 59th Army that defended the position at the foot of Dahong Mountain and on the mountainside.