After exploring the two separate towers, Gu Shi immediately began searching the viewing courtyard behind the castle.

Perhaps because the main purpose of this castle is not to accommodate people, this courtyard looks like it has not been taken care of for a long time and blends directly with the dilapidated appearance of the castle.

Gu Shi stood in front of the wildly growing weeds, his face looking a little embarrassed.

He hesitated for a few seconds, and finally decided to help trim the yard for free and clear the weeds cleanly.

After spending some time and confirming that this courtyard did not hide any secrets, Gu Shi planned to go to the next place.

As for this ravaged grassland, just cover it up a little. This place is remote and is probably as neglected as the previous clock tower.

Although this cover-up was crude, it was enough to last them through one night. By the time someone discovered the abnormality of this place tomorrow, they would have already fled.

Walking out from the other side of the courtyard, Gu Shi walked along the path trampled on the lawn, preparing to go to the next area.

At this moment, the arms he held in his arms suddenly moved automatically.

Gu Shi quickly took out his pocket watch and checked it.

"It's Captain Zhang! He's found the missing people. Great!"

After receiving the news from Zhang Bei, Gu Shi immediately gave up his original plan, changed direction, and rushed towards the main building in the middle.

When Gu Shi arrived at the entrance of the main building, the door was open and there were no guards around - most likely they had been dealt with by Zhang Bei and Zhang Nan.

The interior decoration of the main building is very different from its exterior.

From the outside, the building looks eerie and dilapidated, with worn walls and deliberately sealed doors and windows. It is no exaggeration to say that it is a haunted building.

But its interior is completely luxurious, with chandeliers made of gems, cashmere carpets, not to mention the exquisite paintings hanging on the walls. There is even a faint scent of incense floating in the air.

This place is probably more exquisite than the bedrooms of some minor nobles.

Even though we haven't actually met each other, these details alone are enough to reflect the castle owner's style of doing things.

However, Gu Shi now had no mind to observe these details. Apart from the hint of fragrance that made him put on the gas mask again, he just glanced at everything else.

After entering the main building, Gu Shi followed the instructions of his pocket watch and moved quickly towards Zhang Bei's location.

He walked through a long corridor, turned around several times, and finally came to a secret door hidden deep in the main building.

This door is located in a very hidden corner. If it weren't for the guidance of the pocket watch, Gu Shi would not know how much effort it would take to find this door.

Now, the door was wide open, and a spiral staircase leading downwards appeared clearly in front of Gu Shi.

He glanced at the pocket watch in his hand again, and after confirming that Zhang Bei was downstairs, he walked in briskly.

Through this staircase, Gu Shi came to the basement of the castle.

The space below was even larger than Gu Shi had expected. As soon as he walked out of the stairs, he came to a room that was obviously used for people to rest. Judging from the furnishings inside, it should be prepared for the guards.

Zhang Nan, who had been waiting on the side, waved at him, "Gu Shi, here."

Zhang Nan and Zhang Bei were jointly responsible for the exploration of the main building. When he received Zhang Bei's signal, he was not far away and came down in no time.

Gu Shi walked over to Zhang Nan and asked, "Where's Captain Zhang? Did he find the missing people?"

As Zhang Nan led Gu Shi deeper into the basement, he answered one by one, "He's just ahead, trying to find a way to save people.

We did find some of the missing people in this basement, but after checking the number of people, we found that several people were still missing.

We plan to wake up the few people we found first and ask them about their situation. We might be able to get some useful information from them."

While listening to Zhang Nan, Gu Shi was also observing the surrounding environment. His eyes swept across the small compartments on both sides of the corridor. In each compartment, a professional who was heavily bound was sleeping.

This basement was very similar to the tower he had just visited. Both were places used to imprison people, and the people in the rooms here were also sleeping like those in the tower.

But the difference is that the facilities in this basement are obviously more advanced than those in the tower.

But think about it, the prisoners here are all professionals, their fighting power is totally not on the same level as ordinary people, so these facilities naturally need to be upgraded.

Gu Shi then asked, "These people must have been drugged. Did the antidote we prepared work?"

Zhang Nan shrugged, "I don't know either. These are all researched by my brother. I was busy checking if there were any other guards in the basement. I just heard you coming down, so I came over to check.

But it looks like it should be useful.”

Gu Shi followed Zhang Nan's gaze and looked forward, just in time to see Zhang Bei helping someone stand up carefully.

As if he had noticed Gu Shi and the others' gazes, Zhang Bei turned around and saw the two of them coming together. He ordered, "You two are here just in time. Come over here with the key and rescue those people nearby.

We have to hurry up and get our people out before others react."

After saying that, he confirmed with Zhang Nan: "Xiao Nan, have all the guards here been cleared?"

Zhang Nan nodded and replied, "I've checked everything and haven't found any that slipped through the net yet. But as you know, there's still a team left on the third floor that hasn't been dealt with yet."

Zhang Bei obviously understood what was going on. "Okay, let's hurry up."

Gu Shi naturally had no objection. They followed Zhang Bei's instructions and took the keys to carry the trapped people out of the room.

During this process, Gu Shi inexplicably developed a strange feeling in his heart. He didn't know if it was an illusion, but he always felt that these people were subtly different from the photos in the information.

But it’s normal that there are some differences between the real person and the photo, right?

Gu Shi had seen this situation before. He had even seen photos of the same person taken just a few seconds apart, but they looked like two different people.

Moreover, the current situation is not the time to worry about this matter. This thought only popped up for a moment before being suppressed by Gu Shi.