Lu Chao walked to the left of the two rooms with the concave layout of the square hall on the second floor, and studied the entrance according to the layout on the architectural drawing.

There were only walls here, no doors at all, but there should be a room in front of it.

Lu Chao visually estimated the distance, and then tried to walk forward, but was blocked by the wall.

I changed places and walked forward again, and I actually walked into the wall!

It looks like it's a hidden spot again.

What you see is not necessarily real, the walls are void and can be traversed.

Inside is a room, the door is not visible from the outside, but the door is visible from the inside.

The room was empty, with a window on the inner side of the wall, opposite the hidden room on the opposite side of the concave shape.

Lu Chao walked to the hidden room on the right side of the second floor again, and sure enough, there was also a window in the opposite position.

There are no windows on the first floor of the castle, the windows on the third and fourth floors are nailed, and only three windows can be opened on the second floor, and all three windows are concentrated on the three walls that are recessed in a zigzag shape.

Lu Chao studied the architectural drawings he had just seen, and found a lightning rod in the place marked by the drawings in the center of the yard.

It's no wonder that every time lightning strikes from the sky, it appears in the same spot, because the thunderbolt is attracted to the lightning rod.

Of course, if you look out of the window, you can't see anything clearly because of the rain.

The monster outside shouldn't be able to withstand the bombardment of thunder and lightning.

As soon as you open the window, the monster will fly to the window, and the rest will be simple.

Open the window on this side first, lure the monster to this side, then close the window, and then open the window on the other side, and the monster will fly straight from here to there, and if it happens to have a lightning bolt over it, a lightning strike strikes it, and it should be able to kill it.

The power of the thunder is very great.

And even if it doesn't succeed once, it flies around these two windows, and it may be struck by lightning at any point.

Although he killed it, he still couldn't find a way to leave the castle, but now Lu Chao had nothing else to do for the time being, but to try to get rid of this flying monster before thinking about the next plan.

Lu Chao opened the window bolt, the window was instantly pushed open by the storm, the torches in the room were blown out, and Lu Chao hurriedly retreated to the back wall.

It only took about twenty seconds for the monster to crash through the window from the outside. The sound of it striking the wall was so loud that the whole castle began to tremble.

The walls in the game are really strong enough, and if it were a real castle in the real world, I am afraid that it would not be able to withstand a few such impacts, and the walls would soon crumble.

After Lu Chao closed the window, he quickly ran to the opposite window and opened the window over there.

The monster's vision should be able to penetrate the heavy rain, or perhaps the game program has designed some kind of induction for it, and it sees that the window is closed on this side and open on the other, so it flappes its huge wings and turns and pounces on it.

Thunder rang out, and lightning shone outside.

Unfortunately, the monster didn't seem to be struck by the lightning, and it soon appeared outside the window on the other side, and began to pounce on the window on this side.

Back and forth seven or eight times, the monster was still intact. Lu Chao couldn't help but feel a little deflated.

Is this going to work?

More than ten minutes passed.

When I ran to the opposite side and opened the window again, the thunder just rang out.

After a long while, Lu Chao didn't wait for the monster to pounce on the window. And according to the time of the previous times, it should have pounced by this time.

The sound of rain outside the window was still loud.

After a few more minutes, Lu Chao seemed to hear some movement, as if the iron door on the first floor was opened.

Lu Chao hurriedly went down to the first floor and found that the iron door on the first floor of the castle had indeed been opened! It was opened from the outside by a woman.

"Thank you, kind traveler, for helping me kill the monster, and I can finally go home." The woman who came in through the iron gate was all wet in her clothes and her hair was also wet. With such heavy rain, I don't know how long she hid outside.

Of course, these are just the design of the program.

"You're welcome, is there anything else I can do to help you?" Lu Chao tentatively explored the next small goal of the mission.

"No, the monsters have been eliminated, our small mountain town is quiet again, and you can just go outside and walk around, by the way. Be careful not to go too far from the lightning rod in front of the door, or you will be struck by lightning," the woman said and walked to the room on the left by herself.

The rain outside was still very heavy, but fortunately there were a few old umbrellas at the door, Lu Chao chose one that didn't look damaged and held it in his hand, then held up the umbrella and walked outside.

"Traveler, are you going out? It's dark outside, I'll give you an oil lamp to light it up. The woman suddenly came out of the room, carrying an oil lamp that was protected from wind and rain.

"Thank you." Lu Chao stretched out his hand to take the oil lamp, and then walked out of the castle again.

The water in the doorway was so deep that it almost submerged the calves.

The monster's huge corpse fell to the ground, and after Lu Chao searched, he found a book.

Not a skill book, but a diary.

I looked through it, to the effect that the owner of this diary, in order to restore the peace here, in order to kill monsters, sold his soul to the dark lord underground.

The Dark Lord can't be Cao Cao, right?

Lu Chao estimated that this diary should be the clue to this mission.

Just as Lu Chao was standing in place and thinking, a bolt of lightning slashed down from the sky and smashed straight on the lightning rod erected high in front of the ancient castle, startling Lu Chao.

Lu Chao recalled that the woman in the ancient castle had reminded him just now not to leave this lightning rod too far. It looks like if he walks too far from here, he might be killed by thunder from the sky.

But if you can't explore from afar, you won't be able to find clues about the next step in the mission.

Lu Chao estimated that the dark demon king mentioned in the diary should be the clue for the next step. When I was in the castle before, there was an iron door in the lower room on the left that couldn't be opened, so it is possible that after getting this diary, I should be able to find new clues by asking the woman in the castle.

Lu Chao took the diary and asked the woman, and the woman really reacted.

After a lengthy explanation, Lu Chao almost understood what was going on.

The woman is Huang Yueying, Zhuge Liang's wife.

The diary was written by Zhuge Liang.

Huang Yueying said for more than ten minutes to the effect that her husband Zhuge Liang, in order to fight against the dark demon king Cao Cao, borrowed the corpse of Liu Bang, the sleeping ancestor of the Han Dynasty, and asked him to help suppress the anti-thief Cao Cao.