Feng Yunxi pointed to a small bamboo forest behind them, and motioned to climb over the wall and enter the courtyard from there.

Mu Yichen nodded, and the two turned around and walked towards the bamboo forest.

This bamboo forest was just planted by the original city lord last year, and it has not grown much yet, and the bamboo forest is next to the residence of the city lord's only son.

That is, where the current enemy commander is.

The two quietly walked to the corner of the bamboo forest, and Mu Yichen hugged Feng Yunxi's waist again and brought her into the courtyard together.

Entering the compound, the two quickly hid out of the patrol's field of vision.

At this moment, the enemy commander was summarizing today's battle with the generals in the council hall, and the coach's hoarse voice made Feng Yunxi a little familiar, but he didn't know whose voice it was.

"Over there." Mu Yichen lowered his voice and looked at the location of the study closest to them.

At this time, everyone, including the enemy generals, was in the council hall, and the study room was empty.

Feng Yunxi nodded, followed behind Mu Yichen, dodged the patrolling soldiers, and walked in the direction of the study.

The door of the study was locked, but Mu Yichen didn't know what method he used, so he opened the door in an instant.

The two entered the room and immediately closed the door again.

"They'll probably be back soon, so hurry up and find out if there's anything important." Mu Yichen said to Feng Yunxi.

At the same time, walk in the direction of the bookcase.

Seeing this, Feng Yunxi also walked to the empty wall behind the bookcase.

Stick your ear to the cabinet and gently tap it with your hand to see if there is a hidden grid.

Mu Yichen's eyes quickly swept over the things on the bookcase, opened the drawer in the bookcase in the same way as just now, and took out some stacks of ledgers from it.

It contains information on the number of enemy troops, food and grass, etc., and judging by the date, it has been prepared for six years.

He quickly flipped through the ledger when suddenly, a folded piece of paper fell out of it.

Mu Yichen opened the piece of paper, his eyes suddenly darkened, and there were two jade pendants on it, one of which was the jade pendant he gave to Feng Yunxi.

How could the enemy commander have a blueprint of the phoenix jade pendant?

Mu Yichen folded the pieces of paper again, put them back in the ledger, and then put them in a drawer.

The things of the enemy generals were well placed, and nothing useful could be found on the bookcase.

"Mu Yichen!" Feng Yunxi whispered.

Mu Yichen turned his head and saw Feng Yunxi open a calligraphy and painting, pointing to the blank wall under the calligraphy and painting, "There is something." ”

Hearing this, Mu Yichen walked over, bent his two fingers, and slammed the wall, only to hear a clear sound.

The two looked at each other.

Feng Yunxi took out the dagger from his lap and drew a rough outline with the dagger while listening to the sound on the wall.

The dark grid is about the size of a box, Feng Yunxi determined the position, and directly stabbed the dagger into the dark grid, which was the sound of the wooden board being penetrated.

"Let me come." Mu Yichen took Feng Yunxi's dagger, transported his spiritual power, and then cut the wooden board like cutting tofu.

Feng Yunxi: !!

I saw Mu Yichen easily cut the wooden board around the range drawn by Feng Yunxi, and finally removed the wooden plank, revealing a square box inside.

On the side wall near the box, a mechanism can be faintly seen.,Apparently the mechanism that opened the dark grid in the first place.。。

Mu Yichen directly took out the box, there was a tight small lock hanging on it, he pinched it hard, pinched the lock open, and then opened the box.