After the banquet, Hu Li and Zhu Rongli returned to their house, and Hu Li and Zhu Rongli, who had been separated for nearly two years, naturally ran into the fire, and both of them were martial arts practitioners, and the energetic two tossed until the early hours of the morning before falling asleep.

The next day, Zhu Rongli took Hu Li to a cave where the entrance was blocked with wood, and the stone floor of the cave was covered with a thick layer of earth, and hundreds of pangolins were kept inside. Seeing Hu Li looking at him suspiciously, Zhu Rongli said to Hu Li: "King, this is what I let people raise, once the hunting team in the clan caught a few pangolins, and I happened to see them. I remembered that the king seemed to have been carrying a dozen pangolins with him all the way to the north, so I asked the hunting team curiously what to do with this pangolin. They say that this pangolin is usually used by the elders of the clan to make medicines, and the meat of this pangolin is very delicate and delicious, and they will give the meat of the pangolin to the king or the elders of the clan to eat. At that time, I wondered if the king was going to take the dozen pangolins back to make medicine, but I was afraid that the king would have other uses, so I asked the elders of the clan to know that the pangolins could be used for medicine after the natural death, so I asked the pangolins to be raised, and I would make a decision after the king came next time. Anyway, we just need to feed them some ants and bugs, which are our forte, so it doesn't take much effort to raise these pangolins. It was only after many experiments that we finally found a way to lay soil in a shady cave with water that flowed down from the top of the mountain, and it was easier for the pangolins to drink water. In the past two years, a few have been caught every time they hunt, and coupled with the natural breeding of these pangolins, there are already hundreds of them before you know it. ”

Hu Li looked at these pangolins, hugged Zhu Rongli excitedly, and said: "You are really my good lady, you have done her husband a great favor, and these pangolins are still of great use for your husband." It turned out that Hu Li's original intention to capture the pangolins was to see if the pangolins could dig a tunnel to capture the city. You must know that many cities do not have moats, and even if there is a moat, the city wall will always have a distance from the moat, because if the city wall is soaked in water for a long time, it is estimated that it will collapse after a long time. Therefore, as long as you find a hidden place through the mountain, you can always break through a tunnel. In addition, the general moat is about four or five meters deep and is dug by hand, as long as the pangolin is dug a little deeper, with the pangolin's strong sense of smell, it can also pass through the moat. There is no need to waste manpower to attract the attention of the enemy, and the concealment of pangolins is much stronger than that of manual holes. It's just that Hu Li has experimented, although the pangolins raised by the soldiers of the beast battalion are now bred to more than fifty, but it takes a lot of time to open up a tunnel of hundreds of meters that people can pass through. In another year and a half, these pangolins will reach more than 1,000 individuals, and they will definitely come in handy.

It's just that there is still a problem, how to coordinate so many pangolins to make holes together, Hu Li tried to domesticate three pangolins, although the pangolins issued a command to make holes together, but only a small number of pangolins cooperated, and most of the pangolins were indifferent at all. When he was in Changshan Country before, Hu Li could only barely communicate with the other fifty or so pangolins when he controlled three pangolins, but now the number of pangolins has reached hundreds, and sure enough, only dozens of them can cooperate.

Hu Li pondered for a while, thinking that maybe the prestige of these three pangolins was not enough, so he found the largest one male and three female four pangolins among the hundreds of pangolins. Then Hu Li turned on the system and strengthened the four pangolins with the 400 charm points obtained by Big Joe and Little Joe, both of whom possessed a face value of 99.

After strengthening, the weight of these four pangolins increased from about 12 catties to nearly 30 catties, and their body size was also several times larger. The most important thing is that when Hu Li manipulated the four pangolins to communicate with the hundreds of pangolins, he found that all the pangolins were forced by the terrifying size and powerful power of these four pangolins to cooperate effectively when making holes.

The original intelligence of the pangolins was not high enough, and although these four pangolins were a little smarter after being strengthened, they could only be controlled by Hu Li to command the other pangolins to work. However, after Hu Li controlled the three, the remaining fourth pangolin, although he would not take the initiative to command the other pangolins, would also follow the three strengthened pangolins to make holes. These four pangolins are also quite close to Hu Li after Hu Li canceled the domestication quota, and it seems that they are indeed a lot smarter.

Hu Li believes that after a few years of natural reproduction, the lineage of these pangolins will be changed by the strengthened pangolins, and the pangolins at that time are estimated to be much stronger than the strengthened pangolins, although they are not as strong as the fortified ones. And according to the genetic characteristics of the little red rabbit horse, the baby pangolins born by mating two strengthened pangolins should be as powerful as their parents, and it is estimated that in two years, the number of pangolins weighing 30 pounds will reach more than 10.

With the coordination of these more than a dozen leader-type pangolins, the number of more than 1,000 pangolins should be able to cooperate at the same time after a period of training, and at that time, Hu Li's tunnel-digging army will become very terrifying.

Realizing the potential of these pangolins, Hu Li would come to the cave every day during the day to train the pangolins, and after two months of training, the pangolins would gather at the behest of the three pangolin leaders under Hu Li's command to make holes that people could pass through.

Hu Li calculated, to create a two-meter-high, one-meter-wide cave, nearly 200 pangolins need to gather and line up, these nearly 200 pangolins can advance about 200 meters a day regardless of digging holes and discharging soil, of course, during this period, they will definitely replace the other 200 pangolins due to physical exhaustion. If there were soldiers who cooperated in transporting earth, the current 500-odd pangolins could almost achieve this ideal efficiency. If only pangolins are used to make holes in order to enhance the disadvantages, the efficiency will have to be halved.

In other words, if you want to open a one-thousand-meter tunnel, with the cooperation of soldiers, it only takes five days. If there were no soldiers to cooperate, it would have taken about ten days. It is believed that in two years, as the number of pangolins increases to about 1,500, and the size and strength of the pangolins have also become stronger due to the change of bloodline, coupled with the increase in the number of chief-level pangolins, the efficiency of digging tunnels with only pangolins will be increased to about three times.

At that time, the pangolin army was very terrifying, and it only took about three days to open a one-thousand-meter passage, and I believe that whether it was a siege or a night attack on the enemy troops outside the city, it would be a big help. Just imagine, if the enemy army camped ten miles outside the city, that is, a distance of five thousand meters, then the pangolin army could only spend half a month digging the tunnel under the enemy camp.

And digging tunnels inside the city to outside the city, because there is a city wall to block the enemy's sight, in the early and middle stages of digging tunnels, you can also let soldiers help transport soil, and in the later stage, because the artificial movement is too large, so you can only rely on pangolins and have to reduce the speed, so you can carry out a night attack on the enemy camp in about ten days. Ten days is a very short time for those battles in which the siege and confrontation can take months and half a year, and of course this method of digging tunnels can be applied in the water-scarce areas of the north, but it is estimated that it is not very applicable in the south.