Originally, there were more than 30,000 troops guarding Zhaoling, but now it is estimated that there are less than 2,000 people, but everyone who can fight has been transferred to the front line of counterinsurgency. The guards became very weak.

The Zhaoling project was carefully designed by Yan Lide and Yan Liben, who were born in a civil engineering family and served as master craftsmen. The whole Zhaoling is modeled after the design of Chang'an City, and the main tomb of Emperor Taizong is on the main peak of Jiuzhi Mountain in the northernmost part, which is equivalent to the location of the palace city of Chang'an City.

The group crossed the outermost guards, walked for another half an hour, and finally came to the bottom of the main peak of Jiuzhi Mountain.

The main peak of the whole Jiuzhi Mountain has been built up by the city wall to enclose it, the four corners are repaired with corner towers, the south, north, west and east four walls are in the middle, and there are four gates of Vermilion Bird Gate, Xuanwu Gate, Qinglong Gate and White Tiger Gate.

Inside is the mausoleum of Taizong, the Xuangong of Taizong's mausoleum is also the underground palace, located on the mountainside in the south of the main peak, hollowed out the belly of the mountain to build. There is a dedication hall in the south of the main peak, and there is a north Sima gate in the north. In addition, there are houses, temples, temples, etc.

Later emperors and ministers worshiped Taizong, and the main memorial activities were held at the North Sima Gate, so it was also called the altar here.

The seven people on the opposite side were all stealth masters, and after climbing over the mausoleum wall, they bypassed the checkpoint and the patrolling mausoleum guards all the way to the North Sima Gate.

Half a silver moon. The tomb guarding stone beast and Weng Zhongshi man, who are more than three people tall, are arranged in turn, looking very solemn and sacred in the night.

The seven men stopped in a corner, and after a while, one of them left the group and walked away.

Yu Nuohai's body moved, and he was pressed by Xian Yuyan.

"Don't worry, he's on his way to find a way. ”

Sure enough, it wasn't long before the man returned, and after a while, the crowd continued to move.

Yunuohai and Xian Yuyan passed through the intricate and lush thorn bushes, trailing all the way, and the road became more and more rugged and difficult to walk.

At this time, everyone has come to the west of the main peak of Jiuzhi Mountain, which is composed of cliffs, strange rocks, and very dangerous. It was difficult for ordinary Shouling soldiers to get here, so they just looked at it from a distance and retreated.

The seven people stopped, and each of them wore tiger claw shoes and tiger claw gloves on their feet and hands.

Yu Nuohai and Xian Yuyan looked at each other, looked at the tiger's claws, and then looked at the three claws in their hands, and couldn't help but smile awkwardly.

The three-strand claw is a barb made of three strands of steel, with a sharp tip and a long rope hanging from the tail. Climbing trees, climbing walls, etc., is very neat. In the case of the layers of cliffs in front of you, compared with the tiger claws used for mountaineering, it is far behind.

"Are you okay?" Yu Nuohai angrily pouted at Xian Yuyan. He is slender and has a strong physique advantage when climbing.

"No, I can't. I'll wait here, you can go yourself. ”

Xian Yuyan showed a wicked smile on his face, and before he finished speaking, he had already run to the front of Yunuohai, jumping up and down between several cliffs, and was silent.

Yu Nuohai was dumbfounded, and he didn't look like a fat man of more than three hundred pounds at all.

Yu Nuohai hurriedly threw his flying claws and fixed them in a crack in the rock, and floated like a spider hairspring along the rope. Then he retracted his claws and threw them again, and so on, like a flying spider, floating between the craggy rocks and broken peaks.

The people on the opposite side came to a cliff more than three zhang high, and then stopped, and looked from a distance, the place under their feet was only more than a foot wide, and then there was a deep valley.

Yu Nuohai and Xian Yuyan stopped a hundred steps away from each other, their movements were too big, and they were easy to spot when they got closer. The two began to climb the rock wall and walk.

If you can't use light skills, Xian Yuyan will suffer, her round belly is in front of her, and her two arms are getting thicker and shorter. Yu Nuohai climbed to the front, stuck out his tongue at Xian Yuyan, and began to help him climb.

The two found a cliff, only more than ten steps away from each other, easy to monitor, and there was a sour jujube tree blocking it, which was difficult to find.

The person on the other side put down the goods he was carrying. He took out a few jars, many long and short pieces of wood, several wooden wheels, one of which was particularly large, and a few large iron balls, which I couldn't see for the time being.

A diminutive man waved his hand and told everyone to step back as far as they could, making way for an open space. So I fiddled with the wooden shelves. The man was skillful and clever. Soon, the scattered wood and wooden wheels were assembled, and the whole looked like a city-breaking hammer truck, with a rectangular shelf fixed in the middle, and a wooden shaft the thickness of a sea bowl was fixed in the middle, but the structure was more complicated.

The dwarf put a large iron ball on the front end of the wooden shaft, which was hollow like a helmet.

The man took the big wheel and turned it slightly, and the wooden shaft with the iron sleeve turned rapidly.

Yu Nuohai and the two suddenly realized. It's a wooden drill-like tool, and they're going to drill into the mountain? It's just that although this thing is exquisite, it's a bit wishful thinking to drill this mountain wall.

When the two were puzzled, they saw that the other party made another move.

The dwarf took a few more items from a package, which looked like masks, pulled out a bamboo tube, unplugged it, and poured a lot of liquid over each mask. The seven took off their masks, put on their masks, and moved very quickly.

Everything was ready, and the group began the real drilling work.

The dwarf pulled out another wooden box, took out a slender object, and after removing a layer of cowhide-like stuff wrapped around the surface, it revealed a glittering steel bar about an inch thick and two feet long, which seemed to be a rare steel tempering.

It turned out that there was a hole in the middle of the iron drill bit, and the dwarf inserted the steel bar into it, fixed it, and left more than a foot long outside. This is a drill bit made of pure steel.

The dwarf aimed the drill frame at the rock wall, gently turned the wooden wheel, and tested the hardness of the rock formation. Another person began to hold a bamboo tube and drip water on the drill bit little by little to cool down the steel drill. In an instant, the stainless steel drill bit had been drilled more than an inch deep

Soon, the dwarf had drilled seven or eight holes more than a foot deep in the rock wall. Put away the rig, waved his hand, and motioned for the other two to start moving, and he and a few others retreated to the upwind.

The two men each opened a jar, and one of them took the lead, pouring the liquid from one of the jars into each stone hole with a bamboo pipe. Another man followed suit and poured the liquid from another jar into each of the stone holes according to the law.

In an instant, a thick white mist emerged from the stone hole. A pungent smell blew down the wind to the place where Yu Nuohai and Xian Yu Yan were hiding.

The two quickly covered their noses and hid behind the rocks, not daring to show their heads. Fortunately, the mountain wind is very strong, and the pungent smell blows quickly and blows away quickly.

When the smell wore off, the dwarf removed the stainless steel drill bit and began to drill directly into the mountain with the big iron drill bit. The rock wall, which was originally hard, fell like mud.

"Damn it, awesome!"

Yu Nuohai and Xian Yuyan saw it, and couldn't help but cry out, this dwarf's ability is indeed extraordinary, but I am afraid that there are still masters in the team, and it will be troublesome to fight for a while.

The dwarf operated the drill rig and soon drilled a hole more than two feet deep and three feet deep. Wait until the rock is hard at the depths, and you can't drill hard. Again, in the order of the squares.

More than two hours had passed, and the dwarf had finally stopped.

The dwarf took off all the big and small drill bits, and discarded the rock crevices that were stuffed on the side along with the discarded drill bits just now. The rig frame was reassembled, and bundles of rope were taken out and mounted on the original wooden shafts. It was made into a winch.

All the contents of the jar were used, and the two people in charge carefully broke the jar, wrapped it in the original package, and stuffed it into the crack of the mountain.

The site was cleaned up.

It looks like the holes have all been laid. The man with the map blew on the fire, turned over the pages of the map, and spoke to the other three men, then pulled up the rope and went into the hole in the stone first.

The dwarf operated the winch and slowly rolled the rope into the hole.

One of the remaining people put their ears to the mouth of the cave, listening carefully to what was going on inside.

"The boss shouted for us to go in. After a while, the man gave the command.

The remaining three entered the cave in turn. The dwarf, the two in charge of the jar, were left outside.

Because they didn't get complete information in advance, the other party's actions were very unexpected by Yu Nuohai and the others.

The two retreated to the leeward place and discussed in a whisper.

"Do you want to follow up?" Yu Nuohai is used to lurking and tracking, so he is naturally the first to think of this.

"There are three people outside, and if you want to follow them in, you have to kill them, so it's easy to expose ourselves, and I'm afraid that the people inside will be on guard. ”

"It seems that they are masters of digging caves in the mountains, and their martial arts may not be so high, if they plan carefully, it shouldn't be much of a problem to kill the three of them. ”

"Can't you wait outside?"

"I'm afraid not. When I followed them that day, one of them was very good at light work, and when I climbed the mountain just now, although they wore tiger claws, I could also see that three or four of them were very good at light work. Although this place is steep, it is also easy to escape, if they are let out, a few people scatter and flee, you and I will not be able to catch up at all. ”

"So you can only follow up and deal with them in the crypt?"

"It can only be so. ”

"How can you kill three people at the same time?"

"I have a way. ”

After Yu Nuohai finished speaking, he took out a crossbow machine, which could be loaded with three crossbow arrows at the same time and shot in three directions. The bolts shone with a green glow.

"Is it highly poisonous?" Xian Yuyan squinted at Yu Nuohai and asked.

"See blood seal the throat. Yu Nuohai knew what Xian Yuyan meant, but he still smiled proudly.

"You must have killed a lot of people with it, right?"

"Yes," Yu Nuohai adjusted the direction of the crossbow arrows to ensure that the three crossbow arrows could be fired at the same time and nailed into the opponent's throat at the same time, "But now is not the time to discuss this, those two fiddling jars seem to have the weakest martial arts, don't worry, you climb over the cliff, close the distance, and keep an eye on the one who operates the crossbow machine, if he dodges my crossbow arrows, you have to make sure that you can kill him with one sword." ”

Xian Yuyan didn't talk nonsense, held her breath, and carefully climbed to a cliff above the opponent's head, swinging her double knives, ready to attack. Then he gestured to Yu Nuohai.