After Xu Ping'an entered the door, he first took a look at the first floor, but in fact, he didn't have hope for the first floor, and he didn't believe that Xu Xiongbei could put important things on the first floor. Then he came to the second floor, which was simply a small arsenal, with all kinds of swords and armor, strong bows and crossbows, as well as some chariots, trebuchets, and construction drawings of siege wood, Xu Ping'an couldn't help but sigh when he saw these, no wonder the northern land would make it difficult for the Northern Han to move an inch.

The third layer is a row of shelves, on which are placed are large scrolls, Xu Ping'an took out and looked at some drawings, what army deployment map, walled fort construction map, material storage map, etc., Xu Ping'an almost looked at all the things inside and didn't find any letters.

He suddenly ran back to the first floor and sat on Xu Xiongbei's seat and began to think, most of the things in the secret tower were related to the military and politics of the north, and the secret letter was obviously incompatible with those things on the second and third floors.

Xu Ping'an closed his eyes and assumed that if it was Xu Xiongbei, where would he put his things? This was the training they had done at the beginning, because he had been with Xu Xiongbei for a long time, and he was no stranger to some of his habits, and suddenly his hand touched a box in the upper left corner of the desk, and he took the box and opened it to take a look, and inside was a letter, which said Xu Xiongbei, the general of Southern Chu Zhenbei.

Xu Ping'an took out the letter and stuffed it into his arms and just wanted to leave, but suddenly thought of forging a letter and putting it back in place, so that if he could pass the test in confusion, it would save a lot of trouble, it just so happened that he had similar training before, and the prime minister of the Northern Han Dynasty was not a calligrapher, and it was not difficult to imitate, so he would return to his original position and start imitating with the paper and pen on the table.

Meng Gang, the commander of the guards, took four guards to patrol the courtyard, they first walked through the corridor to the door of the secret tower, just walked through the door Meng Gang suddenly raised his hand to stop everyone, he quietly looked at the door latch and said to the four guards behind him: "Everyone, pay attention, there are people inside." ”

It turned out that when Xu Ping'an went in just now, in order not to make people suspicious, he also brought the copper lock in, but it happened that Meng remembered that the door was locked when he passed by just now, and now there is a different situation, that someone must have entered.

Xu Ping'an had just faked the letter and heard movement at the door before he could put it away, he quickly stopped all his movements, hoping that the people at the door would leave without finding anything, but after waiting for a while, there was no movement outside, and he couldn't hear the sound of footsteps going away. Xu Ping'an felt bad, took the two letters into his arms, and prepared to go upstairs.

At this time, the door was suddenly pushed open, and although both parties guessed each other's existence, they were stunned when they really saw each other. Meng Gang drew his long sword and asked angrily, "Who are you, do you know that trespassing on the secret tower is a capital crime?"

"Hmph!" Xu Ping'an obviously didn't want to say anything to him, he raised his leg and wanted to run to the second floor, but Meng Gang's reaction was not slow, he waved the long sword in his hand and slashed towards Xu Ping'an, Xu Ping'an closed his leg in time to dodge the sword, Meng Gang was a little too strong to restrain it, and the wooden staircase that was cut down with a sword was broken.

Xu Ping'an found the right time to kick Meng Gang's heart, his kick was also a full kick, the momentum was heavy, fast as lightning, he had to break out before the movement was big, otherwise he would have lost his efforts if he alarmed the gods of the Guogong Mansion.

Xu Ping'an's kick was fast and ruthless, Meng Gang didn't have time to dodge at all, he had to protect his arm in front of his chest.

"Smack!"

Meng Gang felt that the bones of his arm were about to shatter when he was kicked, and the whole person involuntarily slid back four or five steps.

Blocked by Meng Gangyi, the other four guards surrounded him, and Xu Ping'an slid out two snow-bright daggers from his sleeves with a shake of his hands. He first blocked the slashing knife with one hand, then wiped the guard's neck as soon as he got close, then twisted the soles of his feet and turned around and smashed the handle of the dagger into the eyebrows of one of the guards, who snorted and collapsed to the ground.

Meng Gang saw that his two subordinates were killed in an instant, and knew that he had met a master, but this also aroused his competitive spirit, and he raised his long sword and stabbed the opponent's head.

"Ding, ding, ding, ding!"

I saw that the long sword was instantly slashed by the opponent's dagger four times in a row, and each time a huge force came from the sword, first I felt the numbness of the tiger's mouth, then the arm shook, then the inner house felt a chaos, and finally a hot chest almost spurted out a mouthful of blood. But Xu Ping'an's dagger was not over yet, and the fifth eye stabbed towards Meng Gang's arm.

"Ahh So he withdrew the dagger, and he jumped up and collided with Meng Gang with his foot.

"Smack!"

Meng Gang retreated a few steps in a row and exited directly outside the door, when the other two guards attacked from both sides, one left and one right. Xu Ping'an tilted his head to dodge the knife on the left and kicked the opponent away, then lowered his body to dodge the straight stab on the right, and stabbed the guard five times in a row.

But the guard was also a ruthless man, he threw away the knife and grabbed Xu Ping'an's wrist with a hideous face, Xu Ping'an pulled it back a few times without pulling it away. At this time, the guard who was kicked away just now slashed again, Xu Ping'an hurriedly waved the dagger to block, but unexpectedly, a hand reached over like lightning and tore off the black scarf on Xu Ping'an's face.

"Is that you?" Meng Gang was the leader who brought Xu Ping'an in just now, and naturally recognized Xu Ping'an at a glance.

"How about me?" Xu Ping'an gritted his teeth and kicked the guard who grabbed his wrist directly, and a dagger swiped at Meng Gang's neck, he just wanted to go back quickly and continue to be his third butler Xu Ping'an, but now that his true face is seen, if he still wants to lurk, he can only kill people.

Meng Gang raised his long sword and hurriedly blocked the dagger, but he was unexpectedly slashed by another dagger in the shoulder, he leaned and stabbed another dagger in the chest, Meng Gang hurriedly blocked and didn't want to be stabbed in the ribs again.

"Poof!poof......" For a while, Meng Gang was slashed seven times, on his arms, chest, and shoulders...... Although none of them are fatal injuries, they will make his movements slower and slower.

"Ahh Xu Ping'an was hugged by his arms, and the dagger that stabbed at Meng Gang's body stopped.

"Ahh The guard behind him was miserable, the sword missed Xu Ping'an, but it stabbed into the guard's lower abdomen impartially.