The sun was setting in the west, and Tong Hang and Geng Junhong finally caught up with the shadow and came back from the east.

Twenty miles is not far. The distance calculation of the Ming Dynasty has the concept of li, Tong Hang knows it, but the distance here is longer than that of later generations, and he really doesn't know. Twenty miles, it is estimated that there will be more than twenty miles of land in later generations, I don't know how much, anyway, there are many more. If it is a flat river, twenty miles is nothing, the problem is that the distance of twenty miles in a straight line, the way out is several times that of this twenty, and some places are still deserted.

Tian Han and the third son and other guards watched at the gate of the manor all day, and their necks were almost like goose necks. As soon as they saw the tired figures of Tong Hang and Geng Junhong appear, a burst of cheers suddenly broke out, and several men actually rushed out with tears in their eyes, rushing to Tong Hang and them, innocent as children.

"I really haven't grown, look at you one by one." Tong Hang scolded with a smile: "Isn't it just to leave for a day? ”

Tian Han replied with a smile: "Instructor, my subordinates are tired to death this day, these dolls who have not been weaned have been around their subordinates for a day. ”

When the third son and the other guards heard this, they rolled their eyes.

"Huh?" Tong Hang deliberately straightened his face and reprimanded: "Didn't do anything for a day? ”

"Where?" Tong Hang shrank his head and said, "Instructor, this is a wrongful subordinate." ”

Sanzi and the others nodded hurriedly and testified one after another, saying how much they had done, how tired they were, and how they had supervised.

"Okay, I know you're not going to be lazy, yes." Tong Hang smiled and said, "Go in, go in." I want to see the fruits of your labor! ”

Tian Han hurriedly said: "The instructor and Mr. Geng will freshen up first, and after dinner, it's not too late to go and see it." ”

Tong Hang nodded and said, "It's okay." He turned his head to Geng Junhong beside him and said, "Mr. Geng, let's go." ”

Everyone surrounded Tian Han and Geng Junhong back to the village.

After dinner, the sun has set.

Tong Hang and Geng Junhong took Tian Han Sanzi and others out of the back door of the kitchen in the backyard and looked at the entrance of the stone gate in front of them.

"Let's go inside." Tong Hang said, stepping forward into the stone gate.

As soon as you enter the stone gate, there is a large hall inside. The floor was covered with stone slabs, which were not smooth, but they were smooth. Dozens of round giant trees support the roof of the cave, and dozens of lanterns hang on the giant trees and the walls of the cave on all sides. Only a quarter of the lanterns were lit at this time, and the hall was already bright.

Tong Hang glanced at the hall, basically according to his own vision. When the row of kitchens outside is remodeled, it should be possible to set up a carriage to enter this hall. In addition to being used as a kitchen, the row of kitchens should also have a defensive function, becoming a strong fortification outside the cave of the arsenal.

Tong Hang turned his head to Geng Junhong beside him and said, "Mr. Geng thinks there is anything else that needs to be improved in this hall?" ”

Geng Junhong said that from the very beginning, when Tong Hang proposed to dig this original stone cave, he was fascinated by the prospect he depicted, and since this cave was excavated day by day, he was shocked. In fact, he didn't know that no one had done this in the Ming Dynasty, so didn't the emperor's family build the emperor's mausoleum for many years, but he didn't participate.

Seeing Childe's question, he said, "It's really a big deal, this hall can accommodate thousands of people." I don't know how Childe will use it in the future, if such a big place can't come in handy, it's really ......"

"Of course it comes in handy. When we arrive in Beijing, we need more spy personnel and more special operations personnel, which can be used as a training and teaching place for physical fitness. Secondly, the shipment of weapons, we also can't do it outside, the carriage enters directly, the safety factor is higher, and it will not be detected by enemy spies. Tong Hang thought for a moment and continued: "Needless to say, I'm just worried that these dozens of logs won't last long. ”

Geng Junhong touched it and said, "Don't worry about this son, this log has been coated with tung oil, and it should be no problem to use it for decades." ”

"If it's okay to use it on the ground, but if you can't keep a little water oozing from the top of it, how long will this log last?" Tong Hang said: "It's better to use stone pillars to be safe." ”

Be careful! Geng Junhong hesitated for a moment, then nodded, and hurriedly remembered it in his heart.

There is a stone door on the back wall of the hall, and there is a passage that extends into the belly of the mountain. Walking to the stone gate, Tong Hang turned around and looked at the hall.

"There should be a defense at this stone gate, and if an enemy attacks the hall, it can also defend the enemy here, so that the enemy will not enter a no-man's land." Tong Hang pointed and said: "Build an arc-shaped stone wall here, open more lookout holes on the wall, stone walls and roofs, no vehicles enter and exit here, just open a small door next to it." ”

Geng Junhong nodded hurriedly and said, "Childe, I'm afraid this stone wall and the top are not good." ”

Tong Hang turned his head and glanced at Geng Junhong and asked, "Why is it bad?" and at the top, our talents are safe, lest the enemy climb the wall and attack. ”

"It can prevent the enemy from climbing the wall, but our men only use the lookout hole to shoot the enemy with bows and arrows, and the enemy is easy to dodge, and the attack surface is too narrow." Geng Junhong thought about it, but still felt that the stone wall and roof were not advisable.

"Why do you still use bows and arrows to defend against the enemy?" Tong Hang smiled and said, "We will use muskets to deal with the invading enemy in the future!" ”

Muskets? Geng Junhong shook his head, that thing was too mysterious. Don't say whether it's a dumb fire, it will blow up the chamber. Because of this, the Shenji Battalion has become the chicken rib army of the imperial court.

"Muskets don't work? That's a big killer! "Tong Hang, who came in later generations, did not have the concept of exploding the chamber in his mind, and the probability of a dud bomb was very small, let alone exploding.

Geng Junhong said: "Childe, the subordinates of that thing are not very clear, but I heard people talk about it when I was serving in the Haizhou Garrison Office before. It is said that the amount of gunpowder is difficult to grasp, it is easy to dumb fire, and it is easy to explode, and gunpowder is not easy to preserve......"

"That's right." Tong Hang couldn't help but be stunned, and then remembered that when he used to read novels on the computer in later generations, he remembered that Daming Fire Weapon really had these problems. I'm not a military fan, and I don't know much, but fortunately, I come from the countryside, and my father runs a fireworks and firecracker factory, so I'm really no stranger to gunpowder. "Don't worry about these problems, with me, these can be solved!"

Looking at Tong Hang's confident appearance, Geng Junhong was stunned, how can such a skilled man also know?

Tong Hang looked at Geng Junhong's appearance, smiled, raised his chin, and said, "Just decide, don't worry." Did you send someone to send the letter from Haizhou? Recently, the grenades and mine improvement patterns have been sent, right? ”

Geng Junhong hurriedly said: "The letter has been sent. The pattern has been studied here, but the laboratory that Childe said is not yet complete. ”

"Well, to speed things up." Tong Hang nodded and said, "Let's go in." ”

The group stepped into the stone gate and walked towards the belly of the mountain...... (To be continued.) )