After Hu Li returned to the Nanhu tribe settlement, he had Meng Huo and King Mulu under house arrest. Hu Li then put the 1,000 Han captives in charge of farming, and the 3,000 barbarian captives in charge of strengthening the defenses of the Nanhu tribesmen's settlements in response to the attacks of Meng Huo and the Mulu kings. However, Hu Li ordered that the mistreatment of these captives was strictly forbidden, and that they should be fed as long as they worked hard.

At night, Hu Li released four owls to assist the vulture and others in guarding, and Hu Li knew that Meng Huo and the Mulu King's clansmen would definitely sneak into the Nanhu tribe at night and rescue Meng Huo and the Mulu King.

As expected, three nights ago, the vulture who was waiting for the rabbit led the team to catch hundreds of barbarians who wanted to infiltrate the Nanhu tribe to rescue Meng Shu and King Mulu. Needless to say, this added hundreds of new people to the labor force of the Nanhu tribe. However, the barbarians also learned to be obedient, and when they found that the Nanhu tribe was equally well defended at night, they no longer had any delusional attempts to infiltrate the king who had saved them.

After the barbarians stopped for more than ten days, Hu Li found through the vision of the golden eagle that more than 50,000 people of Meng Huo and King Mulu had come to camp twenty miles north of the Nanhu tribe, and Hu Li also found an army of more than 30,000 Han people.

Although the spirit of the more than 30,000 Han troops does not look very good, the equipment is very well-equipped, and it seems that it is the regular army of Yizhou County that the Yong clan found through their connections. In the eyes of the Yongshi and the commander of this Han army, with more than 50,000 barbarians to help, plus more than 30,000 of them, nearly 90,000 people attacked the Nanhu tribe with only 30,000 warriors, it must be captured.

As for the unauthorized mobilization of the army, this is not a problem, first, it has Yong's control over all aspects, and second, they came out under the banner of exterminating the barbarians. In the past, Yizhou County has always been passive in the city to defend against the attack of the barbarians, and the poisonous miasma everywhere and the sneak attack of the barbarians who occupy the geographical advantage make the army of Yizhou County dare not enter the jungle at all, let alone the tribe that attacks the barbarians hundreds of miles deep into the jungle.

But this time it was different, this time the army of Yizhou County came all the way to the Nanhu tribe under the leadership of the barbarian guide. The more than 50,000 barbarians who were anxious to rescue Meng Huo and King Mulu rushed to be the vanguard of the attack, and the army of Yizhou County only needed to follow in and control the situation after seeing the victory in the battle.

Since the settlement of the Nanhu tribe is surrounded by mountains on three sides, only the north can attack, and the perimeter of the settlement of the Nanhu tribe has been reinforced with stones by Hu Li since the beginning of this year. When the Han barbarian nearly 90,000 allied troops came to the north of the Nanhu tribe, they saw the stone walls of the Nanhu tribe that were comparable to the walls of Yizhou City.

Knowing that this bone of the Nanhu tribe was a bit difficult to gnaw, and the sky was getting dark, the attacking nearly 90,000 troops set up their tents twenty miles north of the Nanhu tribe. The general of the Yizhou Army, who was elected commander-in-chief, also knew military law, and cleared the nearby woods and dead grass when he set up camp to prevent the fire attack of the Nanhu tribe.

In addition, the general of the Yizhou army was also covered with antlers, horse rejection, pits, and trenches around the camp, and the camp was also covered with open and secret sentinels. With such caution, it stands to reason that the Nanhu tribe should no longer come to raid and rob the camp at night. But what the Yizhou army general didn't know was that there was a tunnel eight meters deep under their feet, which was enough for people to pass through.

The cave where the pangolins were located was just north of the Nanhu tribe's settlement, and Hu Li had trained the pangolins for more than three months to dig from the cave to the north of the settlement.

Hu Li had known that the Nanhu tribe was surrounded by mountains on three sides, and that if the enemy wanted to attack in a big way, he would have to come from the north, and only twenty miles to the north would have a piece of land flat enough for the enemy to camp.

At that time, Hu Li asked the pangolins to dig to the north to prevent an enemy from attacking from the north, and after digging a tunnel, whether it was to attack the enemy army at night from the tunnel, or to escape from the tunnel when the situation was unavoidable, it was a good move to retain the vitality of the Nanhu tribe. Anyway, pangolins always have to be trained to dig holes before they can come in handy, so instead of letting them dig indiscriminately, it is better to leave a way back for the Nanhu tribe.

When Hu Li offended the Yong clan, the Meng Shu tribe and the Mulu King tribe at the same time some time ago, Hu Li thought that there might be such a day. Therefore, taking advantage of the half month when the Han Barbarian Coalition Army was gathering troops, Hu Li has been sending people to cooperate with pangolins to improve this tunnel.

First, it is necessary to widen the tunnel to facilitate people to pass through, and second, it is necessary to open the ground in a hidden position to form a vent, so as not to cause suffocation and death when a large number of clansmen pass through. When the roads were almost perfected, nearly 90,000 allied troops of the Han Barbarians arrived, and they also camped twenty miles to the north, as Hu Li had expected.

Although the Han Barbarian Coalition was cautious enough, they would never have dreamed that there was such a long tunnel beneath their feet. After all, in the low-productivity Nanhu tribe, basically everyone has to work to support themselves, and who will have enough to dig such a long tunnel that may be used.

Twenty miles of tunnels is such a big project, if Hu Li does not have a hard-working and full-time pangolin army to make holes, for such a big project, Hu Li is also a clever woman who has no rice to cook. But now that Hu Li has done it, the Han army will surely face a crushing defeat tonight.

After Hu Li dug the pangolin to the flat land for 20 miles, he asked the pangolin to dig a few more fork exits, and there were also upward stairs at the fork exits, and the soil layer above the fork exits was only one meter and fixed with wooden planks. The reason for digging a few more fork exits is because Hu Li doesn't know which exit is the most suitable, so he can only adjust it according to the specific situation on the day when the tunnel is used.

At one o'clock in the morning, the Han Barbarian Coalition Army had basically fallen asleep, and even the sentry detectives were dozing, because the moon was bright tonight, and it was not a good time to attack the camp at night. The three thousand rattan armor troops of the Nanhu tribe wearing wet cloths were also in place in the tunnel, and Hu Li was also in the tunnel. Hu Li knew that the vine armor army was most afraid of fire, so he strictly ordered the vine armor army to wear cotton cloth soaked in water.

Before entering the tunnel, Hu Li caught a few small mice with an owl and released two domesticated small mice from the vent closest to the enemy camp. Due to the barrier of an eight-meter-deep tunnel, the brainwave communication between Hu Li and the domesticated pet is only more than 20 meters, and Hu Li cannot contact the golden eagle in the sky, so he can only use the small mouse crawling on the ground for reconnaissance.