Bo Langjun received a secret letter from Luan Chong on his way back to the imperial city.

The letter said that the Qin brothers did not move in the Bo Mansion and just played the piano and drank wine every day, and were having fun.

"They are comfortable!"

Bo Langjun read the secret letter and curled his lips.

"Honey, I have thought about how to find the Tandi Department?"

Luo Jiaojiao felt scared when she thought of her trembling with the cold water in the pond.

After pondering for a while, Bo Langjun asked Luo Jiaojiao to describe the situation underwater again.

Luo Jiaojiao said that there was nothing at the bottom of the pond, but there were just many large stones with regular arrangements.

"These stones are probably the key to opening the mechanism! If we can draw the distribution of the stones at the bottom of the pond into a graph, maybe we can find the mechanism!"

The man who is a man of thoughtfulness is thoughtful.

"Well! Let me think about it carefully!"

Luo Jiaojiao began to recall the appearance of the underwater stones.

After the carriage arrived at the inn, Luo Jiaojiao began to draw pictures in the room.

After Bo Langjun took a shower and changed his clothes, he saw some stones painted on the hemp paper all over the ground, but he could not see the changes in the stones.

"No! I can't draw it!"

Luo Jiaojiao threw away her brush and lay on several tables in frustration.

"It doesn't matter! You just need to remember to be accurate! Qin He Ding can draw it!"

Bo Langjun signaled Jiang Yu behind him to clean up the hemp paper on the ground.

Three days later, Bo Langjun and the other two returned to Bo Mansion in Pingcheng.

Qin He heard that Bo Langjun wanted a distribution map of underwater stones, so he picked up a pen and started drawing it.

Luo Jiaojiao was on the side to help Qin He recall the concave and convex conditions of the stones.

After Qin He finished drawing, Luo Jiaojiao sincerely convinced his painting skills. She said that Qin He Shen restored the appearance of the bottom of the pond.

Bo Langjun picked up the two stone distribution maps of the pond bottom drawn by Qin He and looked at it.

After a while, Luan Chong took the original mansion designer into Bo Langjun's study.

"The old man is paying homage to Young Master Bo's Mansion!"

The old man in brown clothes and white hair bowed to Bo Langjun.

"How to open the deep pool mechanism in the cave under the ancestral hall in the original mansion?"

Bo Langjun asked directly.

The old man in brown clothes opened his mouth wide after hearing Bo Langjun's words for a long time without saying a word.

"What? Don't you want to say it?"

Bo Langjun pursed his lips unhappily.

"The designer has been secretly executed! He knew he could not live, so he left a cowhide drawing to hide it in the cave!"

The old man in brown swallowed his saliva with difficulty and told the truth he knew.

"Go! Take us to find it!"

Bo Langjun got up and left.

"The villain just heard him talk about this, and he didn't know where he hid the drawing!"

The old man in brown knelt on the ground and kowtowed to Bo Langjun.

"Today's affairs cannot be circulated, otherwise there will be no mercy for killing!"

After Bo Langjun warned the old man in brown clothes, he took everyone to the ancestral hall.

The old man in brown wiped the sweat from his forehead and left Bo Langjun's study. He secretly thanked that when he was still alive, a sharp dagger was placed on his shoulder.

"No!"

Jiang Yu came back to pick up the drawing paper and saw that Luan Chong was about to take the life of the old man in brown, so he drank it to stop him in time.

Luan Chong originally ignored Jiang Yu! He couldn't control what their guards had to do! But now he was hesitating because treasure hunting might still require the old guy in front of him! This is why his subordinates didn't immediately take his life.

Although the old man escaped from death, he was already scared to his seven souls and three orifices, and he was already limp to the ground.

Luan Chong stared at Jiang Yu for a while, then left.

Jiang Yu ordered the guard to send the old man back. The old man was tremblingly helped up by the guard and said vaguely: "I will never say anything!"

After hearing this, Jiang Yu was still a little impressed by Luan Chong's methods. He thought Luan Chong was just scaring the old man and did not really want to kill someone to silence him. He didn't know that if he didn't come back, this old man might have become the ghost under Luan Chong's sword!

When Bo Langjun saw Jiang Yu bringing the manuscript of the stones drawn by Qin He, he took everyone down the cave from the secret passage of the agency.

There is nothing else in the cave except stone walls and stones.

Will the old man lie?

Bo Langjun looked around and couldn't help but raise his eyebrows.

Luo Jiaojiao and others began to look around. They touched the stones, knocked on the walls of the cave, searched around the cave for a circle of fruitlessness, and finally came to Bo Langjun to look at him.

"People who know how to make mechanisms will hide things, and they will also hide things in the mechanisms they do!"

Bo Langjun's words were recognized by everyone, so everyone began to look for mechanisms in the cave again.

"organ?"

Bo Langjun suddenly had a flash of inspiration in his mind and turned around to the wooden box in the lower secret passage.

Qin He heard Bo Langjun's words and saw him walking towards the secret passage of the mechanism, he followed him with some insight.

Bo Langjun knocked on the wall of the box and heard the sound was empty, so he was overjoyed. He asked Qin He how he could open the wall of the box?

Qin He said it was very simple, just find the movable board.

Bo Langjun touched the wooden planks long with his hands and found that one of them was alive. He took off the wooden planks hard, but was injured by one of the short pricks shot out of them.

Fortunately, Bo Langjun reacted quickly, and several other short thorns flew out against his body.

Qin He walked over and reached out and took out the cowhide drawings behind the wooden planks and was very surprised.

Bo Langjun covered his arms and turned around to look at Qin He and said:

"Can you understand?"

"Um!"

Qin He looked at the drawing with a joyful look, and did not notice the change in Bo Langjun's expression on his face.

"Master! Are you injured?"

When Jiang Yu walked to Bo Langjun, he found that his face was a little pale. He stood motionlessly with his left hand covering his right arm, and realized that something was wrong.

"Help me pull out the thorns on my arm!"

Bo Langjun took a deep breath and said.

Luo Jiaojiao, who was standing next to Qin He, tiptoeing to look at the picture, heard what Jiang Yu and Bo Langjun said, and immediately came over to help.

Jiang Yu polished the fire slash and saw a dark broken thorn piercing Bo Langjun's arm.

"We might as well go up and let the doctor deal with it!"

Jiang Yu didn't dare to reach out to pull out the thorn.

"Ah!"

Luo Jiaojiao put one hand around Bo Langjun's arm, and pulled out the thorn with the other hand. Bo Langjun couldn't help but scream.

"Are you seriously injured?"

Qin Li came over and asked with concern.

"fine!"

Bo Langjun saw sweat on his forehead, but he forced himself to say.

Jiang Yu glanced at Luo Jiaojiao with a angrily, then took off her clothes for Bo Langjun to check the wound.

"Luckily it's not poisonous!"

Jiang Yu took out the wound medicine and scattered it on Bo Langjun, then tore off his underwear and hugged him and tied it up.

Luo Jiaojiao took out her handkerchief and wiped the sweat stains on Bo Langjun's forehead.

Jiang Yu helped Bo Langjun put on his clothes and tied his belt.

Qin Li felt a little uncomfortable when he saw Luo Jiaojiao not shy away from the little husband's clothes.

"I know where the agency is!"

Qin He, who had been obsessed with studying drawings, suddenly shouted excitedly.

Bo Langjun and the other four walked towards Qin He together.
Chapter completed!