In the fifth year of Taihe, October Gengchen, the beginning of Youchu.

Chang'an, Wannian County, Xingning Fang.

After Zhang Yijun left the table with his sudden words, he left Li Shangyin and Duan Chengshi to sit in place, not realizing what was going on for a while, could it be that they said the wrong thing? Or did the content of their conversation offend Zhang Yijun?

Li Shangyin couldn't figure it out......

Seeing Zhang Yijun pushing the door out of the wine shop, Li Shangyin also hurriedly got up to say goodbye to Duan Chengshi, his tone was full of apologies, although Duan Chengshi was heartbroken, his tone was very hearty and comforted Li Shangyin and said: "It's okay!" Now this table full of wine and food is all my Duan's! That's right, take Yi Jun's money away, and this meal belongs to Duan! ”

Li Shangyin apologized and thanked him, Duan Chengshi just pulled the corners of his lips and smiled lightly, urging Li Shangyin: "If you don't go, your brother Yijun will run away." ”

Seeing Zhang Yijun and Li Shangyin running out one after another, Hu Ji in the store almost thought that she had run into someone who was eating overlord's meal, and was about to shout, but her eyes swept to Duan Chengshi, who was drinking alone at their table, so she was relieved, and then cleaned up the leftovers on the other tables.

Duan Chengshi caught a glimpse of the money that Zhang Yijun left on the table, and couldn't help but look back at the door of the store, smacking his lips and complaining: "Didn't you say that Sixteen Lang would take the money away?" ”

After another cup of Sanle pulp was in his stomach, Duan Chengshi puffed out his red cheeks, exhaled in his mouth, grabbed the copper coin, and said to himself: "I really can't imagine that my Xihe Duan Chengshi was carried ...... today."

There is still an hour before the curfew, and the sun has long since set, and the dusk is coming to an end, leaving only a little afterglow behind the western mountains. In Xingning Fang, some shops have closed their doors, and many diners have embarked on their way home. However, at this time, it was also the beginning of the nightlife in Chang'an City, and the Qinglou in Pingkangfang must have already opened its doors, so the flow of people in the market has not decreased at all.

After Li Shangyin said goodbye to Duan Chengshi, he chased him out of the wine shop, he looked left and right for a while, and finally found Zhang Yijun in a hurry in the crowd of people in the market, and found that he had walked out more than ten steps north along the market, so he hurriedly chased after him.

Li Shangyin was just about to open his mouth to call out Zhang Yijun's name, but the thought that flashed in his mind made him hesitate suddenly, making his lips open slightly, and he stopped talking.

He thought that after getting along with Zhang Yijun for most of the day, the two had become familiar friends, and thought that after traveling together all day, he thought that he already knew something about Zhang Yijun. At this moment, Li Shangyin only vaguely felt that he actually didn't know anything about this rich boy with an extraordinary temperament.

Li Shang looked at Zhang Yijun's back for a long time, and couldn't help but sigh and shake his head, and his immature face was a little lonely and disappointed. Li Shangyin was about to turn around and leave, but suddenly froze his steps, and looked at Beiqu where Zhang Yijun was hurrying to Beiqu with a pair of bright eyes, as if he had made up his mind.

Zhang Yijun silently walked to an abandoned house in Beiqu in the fang, the root of the courtyard wall was overgrown with weeds, and the willows in the inner acacia grew unscrupulously, and many branches stretched out from the courtyard, and the branches were bare. The vermilion paint at the front door is almost peeling off, and the head of the shop is also full of patina.

This house was originally a separate business of the late Situ Du Huangshang, and later Du Huangshang bribed the incident, although Nian was not held accountable for his merits during his lifetime, and the high-ranking officials in the court gave up their friendship with the Du family in order to protect Mingzhe's life. Therefore, this large mansion was naturally unable to be operated by its descendants, so it was abandoned, and I am afraid that it has been more than 20 years now. The surrounding merchants thought that this place was unlucky, so they all stayed away from this street and alley, trying to avoid the storefronts facing this place.

Zhang Yijun looked around for a moment, and after confirming that there was no one around, he held the rusty copper ring on the left side of the pavement, pushed it upwards with force, and then pressed on the left side of the Zhumen with the weight of his body.

With the "squeak" sound of the wood hinge rubbing, the Zhu Door was slowly pushed open, and a smell of old earth mixed with dust came to his face, which made Zhang Yijun cough lightly twice.

This is a three-entry courtyard, the courtyard has obviously been ignored for several years, a potted podocarpus pine in the middle of the front yard has long been withered, and the green bamboo on both sides of the path has also become a withered bamboo, the bamboo leaves have been blown scattered all over the ground, and the shoes will be broken into withered dust when stepped on.

After Zhang Yijun closed the door of the mansion, he seemed to be familiar with the road, and pressed his steps through the second gate and went straight to the back garden of this house.

The furnishings in the back garden should be the same, but the rockery is full of artemisia grass, the pond has long been dried up, the inside is covered with moss, and the pillars around the pavilion have also been eaten by beetles, I am afraid that it will collapse in a few years, although it is dilapidated, but it can also vaguely see the luxury of the past.

Zhang Yijun did not stop in the back garden for long, but went straight towards the innermost blue brick courtyard wall in the back garden. Then, starting with a black graphite imprint in the center of the wall, he gestured to the right with the palm of his hand on the wall, and stood in front of a blue brick a full ten ties away from the imprint.

Zhang Yijun put his ear on the green brick, knocked it hard with the knuckle of his index finger, and then pushed it inward, the green brick went deep into the wall like a button for three inches, and made a very crisp "click" sound after hitting the bottom, after Zhang Yijun let go, the green brick bounced back by itself.

Zhang Yijun's gaze then fell to the root of the wall on the far right, and a narrow passage the width of a person appeared on the originally intact wall, leading straight to the ground.

"Huh......" Zhang Yijun breathed a sigh of relief, "I thought the bolt was rusty to death......"

With that, Zhang Yijun slowly disappeared into the dark culvert.

The walls soon returned to their original appearance.

Zhang Yijun took out a fire fold tied to his waist, rubbed it away, illuminated the culvert as wide as a person's shoulder, and with the light of the fire fold, he went to the depths of the culvert that seemed to be extending north endlessly.

The culvert here was not opened by Zhang Yijun, but in the past, Du Huangshang was a secret passage dug privately to connect the palace of Li Ke, the prince of Xianzong, who built the palace of the prince of Xianzong, and this separate industry, but it is a big crime to dig the culvert privately, and it is a felony to dig through to the mansion of the sixteen kings, so no outsiders knew about the existence of the culvert here at that time. Later, the house was abandoned, and the culvert naturally had been sealed for many years.

Until...... King Jian died, King Ying came out of the pavilion, and moved to the original site by coincidence, and the culvert was rediscovered.

In the past, when Zhang Yi was not set up as a staff member, he often entered the sixteen houses through this culvert. He also meditated with His Highness here, but the function of this culvert only stops there.

There are many forks in the middle of the culvert that lead to the west or east, and many of them are even wider than the main trunk of the culvert all the way to the north. However, Zhang Yijun did not hesitate and did not change the direction of his way forward.

Just because he couldn't be clearer, the north curve of Xingning Fang is further north, and it is the Li Fang next to Daming Palace - the Sixteen Princes' Mansion!

"His Royal Highness King Ying......" Zhang Yijun was so excited that he unconsciously muttered to himself, and what King Ying said to himself back then didn't feel that it echoed in his ears.

“…… I guess when you leave, I will have to come to this dark room every day to meditate and chant the scriptures, in order to send lovesickness......"

However, when Zhang Yijun thought about it, it was just a farewell to His Royal Highness, His Royal Highness's words, he had been away from Chang'an for three years, and he had never told anyone about his return to Chang'an this time, and his sister and grandfather still didn't know, let alone His Royal Highness?

Thinking of this, Zhang Yijun's emotions calmed down a little, and he said to himself, let's try our luck. But there was a faint sense of loss.

It's coming, it's almost there......

"Who's here?!"

This voice did not come from Zhang Yijun, and it was obviously not a Laoshzi memory in Zhang Yijun's mind.

"Give me a quick report!"

Then there was a "stab" sound of the horizontal knife coming out of the sheath from the corner in front.

Wait a minute...... Zhang Yijun said in his heart, although this voice was a little distorted and difficult to distinguish in the culvert, but this dialect, could it be ......?

You can't go wrong!

This voice and the mantra at the end of the sentence, Zhang Yijun is afraid that he will never forget it, it is the voice of Liang Tangchen, the captain of Yingwang Mansion!

"Liang Abo?!" Zhang Yijun was quite surprised, and shouted out of his mouth.

Zhang Yijun hurriedly ran to the corner where the candlelight came through, and the silhouette of an elderly general with a beard, a burly body, and a bright light armor came into Zhang Yijun's eyes. Behind them stood several golden-armored guards with tense expressions, all of whom drew their horizontal knives at their waists, extremely vigilant.

Zhang Yijun silently took out the Yingwang seal ribbon that had been prepared from his waist, and when the old general saw it, he hurriedly ordered the guards behind him to put down the horizontal knife, and his face with furrows was filled with surprise.

"Zhang Yijun?!"

That's not all, Liang Tangchen's words fell, and Zhang Yijun heard a slightly confused and eager inquiry coming from the dark room behind the guards.

"Yi...... Yijun? ”

What Zhang Yijun didn't know at this moment was that Li Shangyin was also standing in front of the courtyard wall of Du Huangsheng's Beiye backyard at this time, looking at the blue brick courtyard wall nearly two people high.

Li Shangyin obviously noticed a mark with thick black graphite in the center of the courtyard wall, caressed it with his palm for a moment, and pressed it vigorously, but the wall was as stable as Mount Tai.

"Amazing," Li Shangyin put his hands on his waist, stared at the moss growing on the wall, and said to himself: "Brother Yi Jun, didn't he go underground?" ”

Li Shangyin was about to turn around and search the rest of the rooms in the other industry to search carefully, but stopped halfway through his body.

Wait a minute......

Li Shangyin hurriedly took a few steps back, and his left index finger first pointed to the left courtyard wall covered with thick moss lichen, and then pointed to a wall covered with light moss on the right courtyard wall, and the graphite imprint in the center was like a mark, dividing the moss lichen on both sides into two very neatly.

"Won't it be ......?" Li Shangyin stroked the sparse mustache on his chin with his hand, and then moved to the courtyard wall on the right, his fingertips running along the rough wall to the right.

It doesn't seem strange......

Just when Li Shangyin was puzzled, he looked down and saw that some towering artemisia grass on the ground had been bent, and the moss-covered green brick wall had been unusually shallow at the two bricks.

Li Shangyin leaned over and tapped the two bricks with his knuckles, and then knocked elsewhere, comparing them with the two bricks covered with light moss.

"There is a ghost ......" Li Shangyin muttered like this, so he pushed one of them hard, but he couldn't push it at all, and then pushed the second brick hard, and this time, the brick actually sank.

Li Shangyin pushed the bricks back with a little force, until he heard a crisp "click" sound, Li Shangyin was startled by the strange sound, thinking that he had touched some deadly mechanism by mistake, and quickly let go and jumped backwards.

When he let go, the brick returned to its original position.

"What......" Li Shangyin shook his head a little discouraged, then pursed his lips and turned away.

However, at this moment, the "snort" sound of the friction of the brick surface came to Li Shangyin's ears, and there was movement at the root of the wall on the right.

Li Shangyin looked back, and a dark culvert entrance appeared in front of him.

"Good boy!" Li Shangyin looked at it with his mouth half-open, his eyes looked up and down, and he exclaimed from the bottom of his heart: "Mo family? The art of trapping the armor? ”