After about an hour, Gu Shiyi finally found a hidden pile of sand a kilometer outside of the city.

Pushing aside the sand, a long copper tube extended out into the distance, with only a pitch-black patch of sand to be seen.

Gu Shiyi pressed her ear to the mouth of the copper pipe, and could even hear the sound of the air flowing inside.

Huyan Bie was indeed as he had expected. Even though he had countless reasons in his heart to ask her, he kept his mouth shut, afraid of arousing her boredom.

Furthermore, if she continued to search in this direction, Gu Shiyi did not believe that she would not be able to find Situ Yu. Unless she forever hid underground and did not come out.

In the palace's study room, Situ Jing stood at the center of the room, casting sidelong glances at the three craftsmen kneeling below, while Situ Ming stood below him, looking like he was following Situ Jing's lead.

"Go back, go back, your highness, I don't have any designs, but the location is the emperor, no, it was designed by Situ Yu that traitor!"

The older craftsman in the middle explained the situation clearly, even though he was a little nervous.

"Then when you participated in the construction, did you discover anything special?"

Situ Jing's voice was filled with playfulness, he was surprised that such a person like Situ Yu would actually personally design the venue, then, did he have his own unique profound theory?

"Reporting to Your Highness, this one is in charge of the construction of the top section of the venue, it is not that special, but my cousin was ordered to work with another group of people on the construction of the underground section, however, this venue is already half a year old and cousin hasn't come back yet, even the other craftsmen who participated in the construction section are the same!"

When that person said this, his face darkened. How could those who worked in this line of work not know about this?

The so-called underground works must be something that couldn't be exposed to the light. His cousin must have been silenced by the time it was completed.

"Order people to dig three feet into the ground!"

After Situ Jing dismissed the three blacksmiths, he left these words to Situ Ming and slowly walked out of the study.

The entire underground of the Capital Xia was filled with Situ Jing's underground tunnels, if any new tunnels were dug out, he would know, unless Situ Yu's tunnel was deeper than his.

If he could find out where Situ Yu's tunnel led to now, then everything would not be a big deal.

"Little one, how much longer do you need to walk?"

Huyan no longer walked in front, his hands crossed behind his head, he had a blade of grass in his mouth, looking bored and helpless. Huyan no longer walked in front, his hands crossed behind his head, he had a blade of grass in his mouth, looking bored.

But as he spoke these words, Huyan Bie suddenly felt his feet go empty. Before he could even react, he had already fallen into a bottomless pit.

Gu Shiyi was standing five steps away from him. She watched as Huyan Bie fell to the ground, caught off guard and had no strength to save him.

Gu Shiyi immediately ran to the hole, looking at the bottomless black hole, her heart was filled with fear, if not for Huyan falling down, the one who would have fallen in the hole would have been her.

Thinking about it, Gu Shiyi felt a burst of remorse, she did not know how Huyan had been doing. With this depth, he shouldn't have fallen to her death, but saving him was easier said than done.

Just as Gu Shiyi was in a dilemma, a sharp and ice-cold sensation appeared on her neck, causing him to retract his senses in an instant, as she became alert throughout his body.

"I knew you weren't dead, Shiyier!"

Situ Yu's gloomy voice came from Gu Shiyi's back. Even though Gu Shiyi's appearance had changed greatly, he was still able to recognize her at a glance.

When Situ Yu said this, Xiao Zhi's face was also filled with incredulity. Gu Shiyi actually didn't die, how could this be possible?

Gu Shiyi's heart started to feel an indescribable sense of fear and anxiety. How did he know that she was Gu Shiyi?

However, Gu Shiyi quickly overcome this extremely uncomfortable feeling, she didn't understand why she would suddenly feel fear. Even back in the Sky Prison, she had felt this kind of feeling when facing Situ Yu's torture, and she even chose to commit suicide.

However, Gu Shiyi was extremely clear that the fear and carelessness she felt in the Sky Prison did not originate from the torture Situ Yu had given her.

However, all of those things were things that she could no longer recall, and it might not be a bad thing for her.

"So now, you want to kill me!"

Gu Shiyi's expression was cold, with a hint of ridicule. Before this, the last time she had seen Situ Yu, he was still looking at her with an expression that said "I'm not going to marry", but now, he was holding a blade against his neck.

"How could I, how could I bear to do that!"

Once again, Situ Yu had a face full of tenderness, but the dagger on Gu Shiyi's neck did not move the slightest bit.

"Then why don't you take the dagger down!"

Gu Shiyi's voice had some complaints, but actually, she had already guessed most of Situ Yu's thoughts. He was still as cautious as usual, not allowing any accidents to happen, but thinking about it, if it wasn't for that, he would have died a few hundred times already!

"But I don't dare, Shiyier, as long as you obediently take this pill!"

After Situ Yu finished speaking, he held the dagger tightly against Gu Shiyi's neck with one hand, and with the other hand, he placed a red pill in front of Gu Shiyi's mouth.

Gu Shiyi lowered her eyes as she looked at the pill, wanting to judge its medicinal properties from its smell. However, what she smelled was only a hint of honey.

To eat or not to eat?

After a round of battle, Gu Shiyi finally chose to eat it. She did not believe that there was still poison in this world that she could not cure.

With that thought in mind, Gu Shiyi took the pill from Situ Yu's hands and consumed it without hesitation. Situ Yu's dagger, was also swallowed by Gu Shiyi into her stomach.

Gu Shiyi who had obtained her freedom immediately turned around, but discovered that standing behind her, other than Situ Yu, there was still Xiao Zhi. Seeing that Xiao Zhi looked as if she wanted to say something, yet was unable to do so due to the grievance she felt, Gu Shiyi unconsciously furrowed her brows.

No wonder Gu Shiyi treated her as her closest kin even after she was framed by her so many times. If she did not know about Xiao Zhi's true identity, she would have been deceived by her acting skills.

"Xiao Zhi, why are you here? Situ Yu, what did you do to Xiao Zhi?"

Gu Shiyi's face was filled with surprise, but looking at Xiao Zhi's expression made her heart ache.