Yu Zhu took Ouyang Xuan and Huang Dagen to lie on their stomachs in the barren grass, staring intently at the Mongolian sentinels swimming back and forth at the fire more than ten meters away in front of them. Huang Dagen was a short, middle-aged veteran, and Yu Zhu chose him to carry out the attack on the Mongol sentinels, not only because of his strong and capable body, but also because of his flexible and agile skills. The rangers are all elite soldiers of the Mongolian army, not only strong in martial arts but also extremely vigilant, and the sneak attack is big as soon as there are many people, so Yu Zhu only took two people to attack and kill the sentinels.

The Mongol rangers chose to camp on the banks of the Ganwuli River, apparently with careful consideration. The Ganwuli River also originates from the Longmen Mountain in the northwest of Chongqing Province like the Weijiang River on the edge of Yongkang City, but its origin is in a different ravine. These two rivers are only ten miles apart, flowing parallel to the east to the western Sichuan Plain, and joining the Wenjing River in Yongqu Township. The terrain around the Mongolian army camp is flat, here is 5 miles away from Yongkang Village in the north, about 3 miles away from Longmen Mountain in the west, several tents are surrounded by a bonfire, which is supported next to the official road of Hengyuan Town in the south of Yongkang City, and the tethering place is on the bank of the Ganwuli River more than ten meters away. This section of the river is wide and the water is slow, the water and grass on both sides are abundant, it is convenient for the horses to eat grass and drink water, and the main thing is that this position is easy to keep, if the defenders of Yongkang Walled City attack from the north, they must first wade through the river that is tens of meters wide, if the Mongolian army can not fight, they can also escape through the official road.

According to the plan, after the three of them sneaked over, Yu Zhu and Huang Dagen killed the sentinels, while Ouyang Xuan picked up the fire with sapper shovels to prevent the Tartars from using the fire to release arrows. After the fire was extinguished, Li Shuang led the people who were ambushed a hundred meters away to kill them directly. In order to prevent the Tartar soldiers from escaping, Ouyang Xuan and Yu Zhu also detoured to a few hundred meters in front of the camp, made a climbing rope into a tripwire on the official road leading to Hengyuan Town, and dug dozens of horse traps with sapper shovels, and a fire chief named Cao Ergou led 10 people to lurk here. During the discussion just now, Ouyang Xuan saw that Li Shuang was wounded by an arrow, and suggested that he and the other two wounded soldiers stay where they were and wait, but Li Shuang was willing to stay, so Ouyang Xuan handed over the headlamp to him to use.

As the Tartar Sentinel swam up to the three men and turned his back to the trio, Pillar swooped out of the grass and threw them to the ground. He strangled the Tartar sentry neck with one hand from behind, covered his mouth and nose with the other, and then followed by Huang Dagen stabbed him in the waist, but the tip of the knife was sideways, and it turned out that the Tartar soldier was wearing half-body cowhide hard armor. In a hurry, Huang Dagen searched for the key points but couldn't, and the three of them scuffled together for a while. At this time, Ouyang Xuan was running towards the fire, and out of the corner of his eye, he saw a tall black shadow rushing out from the bolted horse, raising his knife and rushing towards Huang Dagen while whistling, and he was about to slash at Huang Dagen's back when he saw it. In this moment of lightning, Ouyang Xuan couldn't care about extinguishing the fire anymore, he turned around and threw a sapper shovel at the Mongolian secret outpost. To say that this throw was a burst of luck, the sharp sapper shovel hit the neck under the cowhide helmet, and the whistle stopped, and the Mongolian secret whistle fell to the ground, and he saw that he was not alive. At this moment, Huang Dagen had already stabbed the weak part of the hard armor in the ribs several times, so that the Mongolian sentry who was struggling desperately on the ground breathed.

Ouyang Xuan turned around and picked up the sapper shovel and rushed straight to the fire, Yu Zhu and Huang Dagen followed closely behind and pounced on the tent, at this time, the Mongolian army was startled by the whistle, and several people had already rushed out of the tent with weapons in hand. When Ouyang Xuan had just picked up a shovel of fire, a Tartar soldier slashed at his side with a knife, and in a hurry, he stretched out his sapper shovel grid, and the blazing coals of fire made the Tartar soldier scream and hurriedly retreat. The firewood was still unspent, igniting the tent next to it, emitting a strong fire and the smell of burnt wool. At this time, Yu Zhu and Huang Dagen saw that the Tartar soldiers were numerous, so they turned around and returned to the hiding place just now to get a spear, and they each brought a spear in addition to a short knife. Seeing the Tartar soldiers surrounding him, Ouyang Xuan's heart moved, and he waved his shovel to throw the burning branches and coals of the fire at the Tartars and tents.

The flying dust and smoke caused the Tartars to attack, but only for a moment, and they surrounded themselves despite the burning tents. At this time, there were bursts of shouting and killing behind him, and it turned out that Li Shuang and the others had just heard the whistle and knew that there was a change, so they rushed over without waiting for the fire to go out. Although Ouyang Xuan extinguished the fire, he inadvertently made the tent burn, which solved the problem of Song Bing's inability to see at night, and made Li Shuang and the others act more neatly.

Under the siege of the Tartar soldiers, although Ouyang Xuan waved the sapper shovel in his hand whirring, it was in danger in a moment. At the critical moment, Yu Zhu and Huang Dagen rushed over with spears. The Tartars used their swords against their spears, and although they had the upper hand in the scene, they could not succeed in their eagerness. Originally, in order to prevent sneak attacks, although the Tartars could sleep without unloading their armor and clothes, the strong bow could not be tense all the time, and the bowstring had to be untied and maintained when not in use, so as to prevent the strong bow from being damaged by fatigue due to tension. This ranger team because the Song soldiers fled everywhere they went, so they were full of pride, and its ten-captain estimated that even if there was a night attack, it would definitely come from the direction of Yongkang City, in his opinion, the grain collection team was like a lost dog, after escaping to the mountains, where would they dare to attack at night? Of course, in order to prevent the night attack of the Song soldiers, the Tartar soldiers of this 10-person squad still arranged two sentinels, one bright and one dark. But he didn't expect that the grain conscription team would dare to attack at night, and that the secret sentry was killed by a blow as soon as the alarm was issued. Due to the haste of the incident and the darkness of the night, the Tartars did not have time to wind their bows.

The shouts are getting closer. Ouyang Xuan and the three of them formed a small defensive formation back to back and fought and retreated, and when they retreated to the place where the three of them were lurking just now, Li Shuang had already led people to arrive. Seeing this, the ten commanders of the Tartar soldiers called out a long whistle, turned around with the remaining seven Tartar soldiers, ran to the bolted horse, untied the horse's ropes, quickly turned on the horse, and fled along the official road in the direction of Yokohara Town.

"Chase fast". Li Shuang hurriedly issued an order. Slowed by an arrow wound, he was now hanging from the back of the group. Ouyang Xuanhe couldn't take a breath, so he followed Yu Zhu and Huang Dagen and rushed to the official road. As soon as he chased dozens of meters, he heard the sound of shouting and killing and the neighing of horses in front of him. The crowd rushed to the ambush on the official road, and found that the Tartars had fled, and only four horses were lying on the ground and wailing. Cao Ergou saw Yu Zhu and the others coming, and said loudly: "Lord Yu, the Tartar cavalry is very skillful. When the first Tartar stumbled over his horse, he jumped on another empty horse without waiting for him to land, and a Tartar fell into the pit, and when he landed, he rolled over and jumped on the empty horse next to him. Seeing that there was danger ahead, the Tartars behind drove their horses around the official road. I was incompetent, and I only pierced two empty horses with my spear."