Xu Shiyang originally planned to wait for four months, and after the new army of Goryeo was basically formed, he would use his absolute superiority in strength to destroy Yan Yinshuke.

However, the world did not play out exactly according to the script he had drawn up.

Just when the Qi army had not yet begun to assemble and the new army of Goryeo had just been formed and began its initial training, Wanyan Yinshuke suddenly led his subordinates to dispatch from Pyongan Province and Hamgyong Province in two ways at the same time, and went straight to Wangjing of Goryeo.

At this time, the Goryeo Wangjing only had 5,000 soldiers in the regular army brigade whose weapons and equipment had not yet arrived, and the training had not yet been officially launched.

Although it was commanded by a hundred military advisors of the Qi Army, this army failed to perform a miracle and was defeated by Wanyan Yinshu on the banks of the Imjin River.

More than 1,000 Goryeo troops were killed, more than 3,000 were captured, and most of the rest fled.

More than half of the more than 100 military advisers of the Qi army were lost, and the remaining men led the remaining 300 soldiers of the regular brigade to cover the escape of the Goryeo king Yi Liang, the two groups of Goryeo nobles and their families to Ganghwa Island.

On the eighth day of the fifth month, Wanyan Yinshu could lead his troops to conquer the royal capital of Goryeo.

Now, the only thing that Lee can count on is the strange army brigade that Seo Se-ryu has formed and trained in Jeolla Province, and Seo Se-yang can abide by the contract and send troops to aid Goryeo.

Of course, Xu Shiyang didn't want the Jurchen encirclement net that he had just formed to be so easily pried open by Wanyan Yinshu.

On May 12 of the third year of Longdao, after Xu Shiyang received a letter of help from Goryeo, he immediately began to carry out emergency mobilization in Qi Province.

Since he did not expect Yinshu to dare to take the initiative to attack, all units of the New Army are currently scattered in various garrisons for rest, and Xu Shiyang cannot immediately mobilize any of the entire brigades.

Therefore, he abandoned the idea of assembling superior troops according to the plan, and directly transferred men and horses from the remaining troops of each brigade to form a temporary battle group.

This force consisted of one infantry battalion each from six field brigades in Qi Province and southern Liaoning, Xu Shiyang's own Chinese Guards, 10 new chaser companies that were being assembled for training, five companies of heavy cavalry, and five companies of dragoons.

A total of 6,000 people went directly to Ganghwa Island on May 16 on a naval ship.

The nobles of Li Liang and Goryeo, who were hiding under the protection of the Qi army on Ganghwa Island, did not expect the reinforcements to come so quickly, and they were ecstatic, as if the desperate traveler had finally seen a glimmer of light in the darkness.

The kings and nobles of Goryeo were eager for Xu Shiyang to help them drive out the Jurchen invaders—at least to help them recover the royal capital, so that they could return to their own acres and thirds of land and remain alone, as if they had completely forgotten that Xu Shiyang had been their enemy only five months earlier.

Fortunately, Xu Shiyang's thoughts were basically the same as those of the Goryeo, and he could not allow the Jurchens to increase their strength by plundering Goryeo - even if it was a Jurchen traitor.

Since Wanyan Yinshu can take the initiative to attack this time, Xu Shiyang does not plan to let him go back alive.

On May 19, the Goryeo Strange Soldiers Brigade led by Seo Se-jin arrived in Suwon, and at this time, in addition to the 5,000 Strange Soldiers Brigade under his command, there were more than 3,000 volunteers from Chungcheong-do, Jeolla-do, and Gyeongsang-do provinces in southern Goryeo.

With a total strength of 8,000 troops, the combat effectiveness is not strong, but there are quite a few of them.

After Yan Yinshu learned the news, he immediately led his army south to meet the battle - at this time, he did not know that the main force of the Qi army had arrived on Jianghua Island.

Before the war, Xu Shizhen prescribed a Jurchen head and a stone of grain, as well as a high reward for all the slaves and maids who participated in the war after the war to eliminate the angry nationality (anyway, the king of Goryeo paid for it, he would not be distressed) to boost morale, and the morale of the impoverished Goryeo soldiers was greatly boosted.

In the face of a bright future, even the ferocious Jurchen Tartars don't seem to be so terrible.

On May 20, the Goryeo army encountered Yan Yinshuke's Tanma at a place called Wen Xiaoshan, and the Qibing Brigade squad shot and killed a Jurchen cavalryman in Tuyu, and after losing three of its own men, both sides retreated.

Xu Shizhen thought that the main force of Yinshu Ke was not far away, and for fear of being raided, he camped on a high ground called Guangjiao Mountain in the Longren area.

Xu Shizhen guarded the left wing with 2,000 volunteers, 2,000 odd soldiers guarded the right wing, and he led 3,000 odd soldiers to guard the center and put on a defensive formation.

The commander of the Strange Soldier Brigade of the New Army of Goryeo knew very well that the main force of the Qi army was nearby, as long as he could contain Yan Yinshu for a period of time, and when the Qi army cut off the enemy's retreat, this battle would be a great victory to directly annihilate the enemy.

Therefore, Xu Shizhen insisted wholeheartedly, and immediately began to build fortifications after camping in Guangjiao Mountain.

He ordered the Goryeo soldiers to erect a wooden fence in front of the formation, so as to prevent the Jurchen cavalry from stepping directly into the formation, and deployed archers behind the fence.

First, a large number of Jurchen rangers appeared around the Goryeo army, and dozens of Goryeo auxiliaries who were responsible for chopping wood and fetching water were killed, and the rest had to retreat into their positions and passively wait for the enemy's attack.

At dusk on May 20, the main force of Wanyan Yinshuke suddenly launched an attack on the left flank of the Goryeo army, and more than 1,500 Jurchen cavalry howled and rushed straight to the position of the Goryeo rebels.

The Goryeo army immediately fired a large number of arrows, but this kind of light arrow was as difficult as ever to penetrate the armor of the Jurchens, and the Jurchen armored cavalry hit a distance of about fifty paces against the rain of arrows, and with the shouting of several leaders Mouke, the Jurchen armored soldiers with superb riding skills stepped on the stirrups and stood up on the horseback, their hands off the reins, and only used the strength of their waist and legs to control the mount, and all the cavalry used their riding bows to throw light arrows at the Goryeo.

The Goryeo volunteers in the front row were also defended by fences and wooden shields, while the volunteers in the back row had only one tattered clothes, and the inferior protection was so inferior that it was vulnerable to the sharp arrows, and the Goryeo people fell down screaming, and the left front was in chaos.

Taking advantage of this brief opportunity, the most elite Jurchen armor soldiers in the front row suddenly jumped off their horses and rushed directly to a position within ten paces of the Goryeo people with the momentum of dismounting.

These old Jurchen hunters skillfully changed the infantry's hard bows, drew heavy arrows and fired at the shield-holding soldiers in the front row of the Goryeo army.

Heavy arrows grazed the cracks in the fence to pierce the rudimentary wooden shields, stringing the hands of the Goryeo volunteers with their shields, and the heart-rending cries of pain resounded in the air, but everyone who tried to throw away the shield would pay a greater price - the Jurchen heavy arrows always seized the opportunity to hit their vital point in the blink of an eye.

After three rounds of heavy arrows, the shield-wielding Goryeo volunteers were almost swept away, and the follow-up Jurchen armor soldiers shouted in unison, brandishing heavy weapons such as broadswords and one-handed axes, and instantly split the thin wooden fence in front of this section of the front into pieces.

Without the cover of this obstacle, the left flank of the Goryeo army, which had low melee ability, quickly fell into a state of collapse, and the defense line held by more than 2,000 troops was actually broken through by the Jurchens within a quarter of an hour!

It's just that the Jurchens didn't have the interest to chase and kill the rout on the left flank, and the Yinshu Ke main formation blew the conch horn and defeated the Jurchen armor cavalry and the Yinshu Ke main formation troops on the left flank of Goryeo to attack Xu Shizhen's center from the front and the left flank at the same time.