Qin Yu's task was not as difficult as he imagined, and the ten years of peace and prosperity had already smoothed out the sharp spirit of the border army. The walls seem to be tall and majestic, but in fact the defense is full of holes, and the guards of the sergeants are also very lax, as can be seen from which officers can go out of the city in the middle of the night to drink.

With the light skills of Qin Yu's second-rate master, with the help of simple tools, he can completely sneak into the city without knowing it.

Even Qin Yu, who was so cautious by nature, because it was the first time he passed through Tianxia Pass like this, he didn't act immediately, first turned around a few times, and soon he found a city wall with a relatively weak defense.

Even the flying lock prepared in advance was useless, but he just used the light technique of Tiyun Zong, and his body jumped to the top of the city with a few ups and downs on the straight city wall.

Don't look at the martial arts used by Qin Yu, it looks quite ordinary, but the origin is not trivial, this is the unique martial arts of the legendary Wudang faction.

In the past, the Wudang faction had many talents, and he was the leader of the Taoist martial arts sect. It's a pity that his founding patriarch, Zhang Zhenren, offended the founding emperor of the Great Wei Dynasty and buried the disaster of annihilation.

Emperor Hongwu of Wei Gaozu summoned Zhang Zhenren every time he sent a decree and invited him to talk about the way of immortality, but Zhang Zhenren shirked in every way, and even went out directly to wander without a trace of immortals, leaving the prince and prince who passed the holy decree aside.

After the death of Wei Gaozu, successive monarchs favored Wudang until Zhang Zhenren did not appear in the rivers and lakes for a long time, and gradually the news that he had passed away gradually spread in the rivers and lakes.

After several temptations, the imperial court suddenly turned around and sent a large army to encircle and suppress Wudang, and under a round of artillery bombardment, the once prominent famous faction was reduced to rubble.

Even if the disciples of the Wudang faction at that time tried their best to resist, they still couldn't withstand the siege of the imperial army, and ended up beheaded.

It was rumored in the rivers and lakes that Wei Xianzong, the emperor of the Great Wei Dynasty at that time, took a fancy to the secret method of cultivating immortals of the Wudang faction and wanted the Wudang faction to hand it over, but the law could not be passed on lightly, even if it was the Ninety-Five Emperor, it was no exception, and the emperor's will was directly rejected by the Wudang faction.

Zhang Zhenren relied on his amazing martial arts, even if he was unwilling to obey the orders of the imperial court, it was impossible for the imperial court to do anything to him, let alone to the Wudang faction.

If it is forcibly seized, Zhang Zhenren will go into the palace in anger and take a turn, and not everyone can stand it. After all, the legend says that Zhang Zhenren's martial arts have been superb, and even the offerings in the Great Wei Palace are not Zhang Zhenren's enemies.

But when Zhang Zhenren died, the Wudang faction still refused to succumb to the obscenity of the imperial court, and handed over the cultivation secrets, so it caused the catastrophe of annihilation.

After this catastrophe, the Wudang disciples who survived also fell apart, and they were incognito and did not care about the world, and most of Wudang's martial arts were taken away by the royal family, and the rest were also seized by various sects.

Wudang Tiyunzong, which was originally not spread out, fell into the hands of the Heavenly Sword Gate by chance, and was later stolen by Qin Yu.

If this history is known to Zhao Ping, it is enough for him to vomit three liters of blood, then it is the Wudang faction. In his original world, it was inherited for nearly a thousand years, but he didn't expect to be destroyed by the imperial court in this world.

In the world of high martial arts or even in the world of Xianxia, a set of profound martial arts cheats is enough to arouse the covetousness of the emperor who is rich in the world.

It's a pity that after Wudang lost its powerful military protection, it was still stubbornly unwilling to compromise and offered his secret book to the emperor, which eventually led to the disaster of annihilation.

At this time, Qin Yu let him climb the city wall easily, and made sure that this section of the city wall was unmanned, and the inner city wall was also unguarded, Qin Yu grabbed the city wall with both hands and fell lightly. After landing, Qin Yu smiled self-deprecatingly, feeling that he was a little too careful.

At this moment, a cold snort exploded in Qin Yu's brain, so frightened that Qin Yu suddenly didn't know what to do, he wanted to run but didn't dare. After a while and three moments, the surroundings were still quiet, neither the master showed up nor the official army rounded up, Qin Yu put down the hanging heart.

Qin Yu also knew that his behavior must have been discovered, an important level like Tianxia Pass must be guarded by a master, just by the moment that shocked Qin Yu just now, only a top master can do it.

Even if it is a first-class master, there is definitely more than one person here, as for why not arrest him, but just snort coldly to give Qin Yu a warning.

Or is that sentence peaceful for a long time, and people's hearts are scattered, as long as Qin Yu doesn't engage in assassination and destruction, the ghost can rely on him?

Moreover, these self-possessed martial arts are strong, ignoring the curfew and the order to close the city gate, there are many people who come and go, and they, the masters of the court, can't control it, and they will turn a blind eye after a long time.

Besides, these people who dare to ignore the laws and discipline of the imperial court are all elders of the school, and it would be a trouble if they accidentally killed one or two.

With the warning just now, Qin Yu didn't dare to be too arrogant after entering the city, he didn't take the avenue and only drilled the alley, according to Qi Yufei's instructions, Qin Yu came to a small courtyard in all directions.

The courtyard of this second entrance occupies a small area and is slightly dilapidated, but it is ordinary in the slums, and there are no people around, not even the husband who fights the watchman does not come here, let alone the official who patrols the night.

Qin Yu looked left and right, making sure that no one was watching, of course, even if there was surveillance, he might not be able to see it. But at least at this time, after Qin Yu was sure that it was safe, he came to the door lightly and knocked on the knocker.

Dangdangdangdang, dangdangdang, dangdangdang...... After a regular tapping sound. Qin Yu stood still for a moment, and climbed over the wall to enter without waiting for the people inside to reply.

This is all agreed before, and the knock on the door is just to make sure that the person who answers inside is sure that it is his own person, and the other party does not need to respond. If the people who come don't know the code and break in directly, they will be greeted by a hidden weapon.

Even if these traps can't eliminate the intruder, they can delay the other party and give the people inside enough time to escape through the tunnel.

Climbing over the fence and entering the courtyard, Qin Yu did not go directly to the door, but came to the water tank in the northeast corner of the courtyard.

Of course, it's not just that the burning cylinder technology in this world is backward, but even Zhao Ping's original world couldn't burn a large water tank more than half a person high in ancient times.

Especially in the Song Dynasty, it was impossible to burn a large water tank that could drown people, even children, so the story of Sima Guang smashing the tank to save people is pure nonsense.

Qin Yu ran to the water tank not because he was thirsty, and there was no water in the water tank that was empty, so he lifted the cylinder stone that was put aside, and Qin Yu carefully put the stone at the bottom of the tank.

Holding the edge of the water tank with both hands, he slowly turned to the right, only to hear a click and a thin seal popped open on the wooden plank under the haystack by the wall.

Walking quickly to the side of the haystack, Qin Yu took out the dagger he carried with him, inserted it into the gap, and a secret door opened in front of Qin Yu. Qin Yu dodged into an underground passage, and casually closed the wooden door behind him, which looked like it was still just an ordinary haystack from the outside.

This dark passage is not wide, just enough for one person to pass through, and I walked forward a dozen steps to a ladder, and climbed up a few times along the ladder to reach the room.

But when Qin Yu entered the room through the secret door, a smell of blood came to his nose, this smell Qin Yu was familiar with, and he didn't have time to think about it, Qin Yu's instinct was to roll, and he was about to flee with his life when he raised his legs.