"Say it quickly. Uncle. Ye Ruliu urged eagerly.

"That's right, about two years ago, on the day of the Autumn Festival, the king suddenly suffered from mouth sores and carbuncles. After I checked the king's condition, I rushed back to the Taiyi Pavilion to prepare the decoction for the king.

"Na Cheng thought, the little medical officer in charge of boiling the medicine accidentally poured a huge bezoar I prepared for the king into the sewer. I was very angry, you know, the king was waiting for me to bring him a decoction.

"In desperation, I ordered the little medical officer to lead me into the entrance of the sewers, and to look for the precious bezoar. Because the Taiyi Pavilion often boils decoctions, a large amount of drug residues will be produced.

"In order to discharge these residues in time, when the Taiyi Hall was built, the sewer that excretes drug residues in the hall was specially built to be relatively wide, so that people can walk upright in the sewage pipes after going down to the bottom.

"At that time, the little medical officer and I were holding a candle with the sewage in the pipe that had not reached the ankle, and we carefully searched for the bezoar.

I don't know how long I walked inside, and when the fire candle in my hand was about to be extinguished, a glimmer of light suddenly appeared in front of the deep sewage pipe. The two of us walked to the light and found that we had reached the exit of the sewage pipe.

"The exit of the sewage pipe is a rectangular stone hole, and in the pile of traditional Chinese medicine residues stuck at the lower edge of the hole, the much-needed bezoar tree was finally found.

"Out of curiosity, the little doctor and I went out of the cave and found that it was built on the edge of a river about a hundred meters above the city wall, and that the sewage discharged from the moving area was directly discharged into the river below.

"As long as you can successfully free the two princes from the Pavilion, the old man will open the door to welcome you. Through this sewage passage in the backyard, you can escape from Wangjing City smoothly. Imperial Physician Huang said.

"Where is the entrance to this outfall?" Fang Handle asked Imperial Doctor Huang.

"It's in the northeast corner of the vegetable patch in the backyard of the Taiyi Pavilion." Imperial Physician Huang said.

"Then please take us to take a look." Square Handle said.

"Good. No problem. ”

There is a small vegetable field in the backyard of the Taiyi Pavilion, which is said to be a vegetable field, but it is not used to grow vegetables at all. Before the Japanese occupied Wangjing, Huang Taiyi often led the staff in the Taiyi Pavilion to plant some Chinese medicinal materials such as red ginseng, rehmannia and banxia in this so-called vegetable field, which were ready for daily use.

Today, this vegetable patch, which once brought endless pleasure to Imperial Physician Huang, has been completely deserted, and the vegetable patch is scattered with the dead branches and leaves of some unknown wild grasses.

The outfall in the northeast corner of the vegetable field is a circular hole about one meter in diameter.

Under the leadership of Imperial Physician Huang, the five people descended to the bottom of the cave along a ladder bent from thick steel bars on the cave wall.

Just like Imperial Physician Huang said, the height of the entire cave entrance is more than one person.

A damp musty smell mixed with the smell of various Chinese medicines filled the air in the cave.

Imperial Doctor Huang, who was a little uncomfortable, couldn't help but sneeze a few times in a row.

"Uncle. Stay safe. Ye Ruliu took the initiative to step forward to support Imperial Doctor Huang.

"People are old and useless." Imperial Physician Huang said self-deprecatingly.

"Uncle, your body is tough." Li Ruzhu said.

"Thank you for your comfort. My own body, my own clear. It may be the day of the event. Imperial Physician Huang's tone was a little

Gloomy.

Since no sewage has been discharged into the cave for a long time, the bottom of the cave is a little damp, but you can still rest assured.

"Let's move on." Imperial Physician Huang said as he lit a candle prepared in advance in his hand.

Li Ruzhu, Shi Lang and the other four followed behind Imperial Doctor Huang and walked forward cautiously.

After walking for about half an hour, three holes of the same size appeared side by side.

"The hole on the left is from Gyeongbokgung Palace, which is used for sewage discharge; The hole on the right leads from Changdeokgung Palace, which is naturally also used for sewage discharge; This hole in the middle is the main exit of the entire sewage system, and it is also the exit to the outside of the city. Let's go in and see. Imperial Physician Huang held a candle in his hand and introduced to the four people behind him.

After entering the middle hole, a small amount of sewage flows into the hole on the left and right sides of the cave and then flows into the hole, and a small amount of sewage flows from the ground inside the hole.

The five of them had to walk cautiously along the higher ground on either side of the cave wall to avoid stepping on the sewage.

In less than half an hour, the five finally arrived at the exit of the sewage pipe.

When I came out of the hole, there was a pile of rocks under my feet, and the sewage discharged from the hole was haphazardly burrowed into the cracks in the rocks, and flowed into the small river that was almost dry below.

"Wading through this small river all the way north, less than half a mile away, you will enter Bukhansan Mountain. It seems that this underground passage was built for us. Looking at Bukhansan Mountain, which seems to be close at hand, Fang Shanshan is in a good mood.

"yes. It seems that we can't succeed in this mission, otherwise I'm sorry for this underground passage! Shi Lang also sighed.

"It can be seen that people often say that 'there must be a road before the car reaches the mountain' is very reasonable." Ye Ruliu gently held Shi Lang and said.

"At that time, as soon as we rescue His Royal Highness the Prince from the city, I will arrange a team of Korean officers and soldiers to meet us here in advance. As long as we successfully enter Bukhansan Mountain, the rescue mission is basically completed. Li Ruzhu said.

"The key to this mission is how to rescue the two princes from the pavilion and safely enter the sewage hole. Let's go back and make a good total. Fang said loudly.

Three days later, three quarters later.

Located in a low-lying basin, Wang Jingcheng is as silent as a sleeping baby.

In the pavilion where the two Korean princes were imprisoned, several Japanese ninjas hid in corners that were not easy to be detected, closely observing the wind and grass in the museum.

In the alley in front of the main entrance of the Column Hall, Shi Lang was wearing a brocade guard and a tight-fitting nocturnal assassin suit hidden in a dark corner.

After a while, a group of Japanese patrols came from the west side of the alley and walked in a neat formation to the east of the alley.

Seeing that the patrol of the Japanese people had gone away, Shi Lang moved his body lightly, rolled on the spot a few times, and his body was already close to the courtyard wall of the Lieguan. Immediately afterwards, Shi Lang exerted his strength on the spot, and jumped on the roof of the house in the southwest corner of the pavilion like a raccoon cat.

Shi Lang was alertly lying on the gray tile facing the outside side of the "human" shaped roof, listening carefully to the movement in the courtyard.

Fortunately, due to the shelter of the roof ridge and Shi Lang's superior light skills, the Japanese ninjas in the courtyard did not notice what was happening on the roof.

The house where Shi Lang is located is the food room of the Lieguan, that is, the kitchen. Less than two meters to the east from Shi Lang's prone position, a vent protruding from the roof tiles loomed in the night. This place is ventilated

The mouth is actually the smoke exhaust outlet in the kitchen.

Shi Lang carefully climbed to the smoke vent, carefully moved his figure into it, and then slowly descended to the bottom. After going down to the bottom of the smoke exhaust inlet, Shi Lang took out the qie listening utensils he carried with him, and gently inserted it into the brick crack, carefully listening to the movement in the kitchen.

After confirming that there was no one in the kitchen, Shi Lang put away Wen Jin, took out a short dagger, gently inserted the sharp short dagger into the brick joint, and pried open and removed the square bricks one by one.

Shi Lang's technique was so subtle that he didn't make any sound during the whole process of knocking on the bricks.

Shi Lang pried a half-meter-square hole in the flue, drilled out of it, and entered the kitchen.

The whole kitchen is black and hollow. Shi Lang hid his body behind the stove, first to get used to the dark environment in the kitchen, and then quietly observed the internal layout.

The kitchen is equipped with pots, cabinets, cutting boards, and more.

Looking around, Shi Lang's eyes fell on the large barrel of cooking oil placed under the cupboard and the large pile of dry firewood stacked next to it.

Shi Lang walked over, took out the wooden spoon used to scoop water from the cupboard, and then used the wooden spoon to gently scoop up the cooking oil in the bucket and splash it on the pile of dry wood and the wooden walls of the room.

After spilling the cooking oil in the bucket, Shi Lang came to the south wall of the kitchen, took out the Wenjin he was carrying again, and carefully listened to the movement outside the wall. After a while, Shi Lang heard the patrol soldiers of the Japanese people in the alley outside once again follow the original route, walk past the location of the kitchen, and walk east.

It was estimated that the patrols of the Wa Kingdom had already gone away, so Shi Lang put away the smell of gold and got into the flue that had just been pried open.

Shi Lang took out the fire sickle from his body and ignited it, and threw the burning fire sickle at the pile of dry wood sprinkled with cooking oil.

I only heard a "boom", and a raging fire suddenly ignited in the kitchen.

Shi Lang held his breath, exerted his strength in the flue, quickly climbed onto the roof, and then jumped off the roof, ran to the opposite side of the alley, and quickly jumped onto a tall house in front of him.

"Brother Shi Lang, everything is going well!" On the roof, Ye Ruliu, Li Ruzhu and Fang Shank were closely watching Shi Lang's every move. Seeing Shi Lang's smooth return, Ye Ruliu asked with concern.

"All the best." Shi Lang said.

"Good work." Fang Handle said to Shi Lang.

According to the plan of Fang Shan, Shi Lang, Ye Ruliu and Li Ruzhu, Shi Lang first secretly infiltrated the kitchen located on the southwest side of the Column Pavilion and ignited a fire. The fire was accompanied by a northwest wind that had been blowing for several days, and the smoke from the fire was bound to seal the south gate of the Lieguan, which was located to the east of the kitchen. If the hostages and the Japanese ninja inside want to save their lives, they can only escape through the small corner gate located on the northeast side of the Ryokan.

In this way, the Jinyi Guard, who had been ambushed nearby in advance, could take advantage of the chaos to forcibly take the hostages, including the two princes, and then flee with them in the direction of the Imperial Doctor's Pavilion.

Will the fire injure the hostages in the column? Shi Lang raised this concern at the time. However, Fang Shan, who had always acted decisively and ruthlessly, still insisted on his plan to take advantage of the fire, and in his opinion, the wind had been in the northwest wind for the past few days, and the two princes and the other hostages were living in the main house at the northern end of the Lieguan, and there was an open space no less than ten meters away between the kitchen and the main house. Under these circumstances, even if the kitchen on the southwest side of the pavilion was on fire, it would not endanger the personal safety of the two princes and the other hostages. In the end, the plan of the square handle was successfully approved.