Cheng Yang nodded, in fact, he himself thought so, after all, this is a cave, and all kinds of organs are caught in it, and if he is not careful, he may take his own life.

When Cheng Yang was just about to walk back, he suddenly heard a heavy impact behind him, and Cheng Yang thought something was wrong. Immediately move in the direction you just came in.

After hearing the sound, Cheng Yang hurriedly ran outside, and found that the stone door had been closed, and he didn't know if someone had touched the mechanism by mistake or if it would close automatically when the time came.

Cheng Yang touched the wall next to the stone gate with one hand, generally this kind of stone door for the entrance and exit can be opened on both sides at the same time, but Cheng Yang touched the internal mechanism for a long time, and then he heard a sound similar to the sound when the reservoir opened the gate and released water in the wall, and this sound became louder and louder, as if the source of the sound was approaching him.

At this time, Cheng Yang found out that Wang Xin and the others did not come with him, and Cheng Yang continued to look in the direction he had just moved in and did not find the three of them.

Suddenly feeling a little hungry, he took out his mobile phone from his pocket and looked at it, there was still a day before the old man outside left, Cheng Yang was a little anxious, after all, he didn't know how long it would take to get out of here, and Wang Xin and they couldn't find it. Cheng Yang put the phone back in his pocket and checked his backpack.

In addition to the equipment and 6 or 7 magazines given at the beginning, there is only a small part of food in the backpack, and more of it is used for exploration. Cheng Yang cursed a little loudly in his heart, such a big cave put such a little food in his bag, if his physical energy consumption was large, he would have burped himself before he finished exploring the cave.

He took out a small bag of compressed biscuits from the compartment of his backpack and walked forward as he ate. Slowly, the stone statues in the passage became fewer and thinner, and many of them were somewhat mutilated, as if the ones outside were more like new than the ones I had just seen outside.

After walking for about 20 minutes, Cheng Yang found that there was a bright light at the end of the passage, Cheng Yang walked in and saw that it was actually a water outlet, it seemed that this water outlet was leading to the outside, in order to avoid piranhas or something in the water, Cheng Yang threw the only piece of meat placed in the backpack into the water. After about 4 or 5 minutes, Cheng Yang noticed that nothing had changed, so he took off his coat and put it in his backpack and jumped into the water.

A huge current of water rushed into a channel, and the water was very cool, probably a spring in the mountains.

A day later, Cheng Yang returned to the old house, and when he returned home, Cheng Yang called Wang Xin once with QQ, but the other party did not respond, as if he did not come back.

Cheng Yang thought about a lot of things carefully, and felt that Wang Xin and they were not the same as they said, they didn't know about the cave, judging from some details, they were not brought into the cave by someone, it is likely that they entered it by themselves, and the place where they came out was similar to the place they said they escaped from.

Cheng Yang kept replaying the events of the past few days in his mind, looking for the existence of various clues in it, he felt that he was not very familiar with the cave where his parents went down, and then took out the notebook again and looked through it.

The sky outside slowly darkened, and Cheng Yang was still immersed in his notes. Suddenly felt that someone patted him behind him, because the people who could enter his house in the old mansion could be counted with their hands, Cheng Yang closed the note, turned his head and said, "Lu Qiu is back." ”

"Yes, I'll bring back a treasure this time to show you." Saying that, he took out a jade jue from his pocket, Cheng Yang took it and took a look and found that this jade jue was not the same as what he usually saw, because of a set of rotating circles engraved on the top, and there were these words engraved in small characters on the back.

At this time, Cheng Yang couldn't help but recall the scene with Lu Qiu in the sanatorium. At that time, he was lying in the ward all day staring out the window in a daze, and Cheng Yang was his roommate, and the relationship between the two was not just a friend relationship as others imagined.

Cheng Yang felt a little bored, so he opened a little window at the end of the corridor, quietly smoked a cigarette, and the smoke flew out through the crack in the window and disappeared into the air.

"It's the first time I've smoked here." A woman's unique voice came into his mind from behind Cheng Yang, and Cheng Yang hurriedly extinguished the cigarette butt in his hand.

"You're on duty again today." Cheng Yang said with a smile.

"yes, just in case you sneaked here to smoke, so I worked my shift!" As she spoke, Cheng Yang turned to look at her, looking at her holding an envelope in her hand, Cheng Yang smiled and said, "Then I will pay attention in the future, I can't let you catch you in smoking." ”

She glanced at Cheng Yang, handed over an envelope and said, "I don't know who still uses this old envelope, na, send it to you."

Cheng Yang took the envelope and took a look at it and found that the date of delivery was not indicated on it, and it seemed that this kind of receipt could not be returned.

"Thank you." After speaking, Cheng Yang returned to his ward. Cheng Yang's ward is not bad, there are two small bedrooms, a living room, and a dining room, and there are toilets and TVs in the small rooms, and the sound insulation effect is also very good, at least Lu Qiu can't hear Cheng Yang snoring.

Cheng Yang locked the door behind his back, sat on the table and gently cut the paper bag of the envelope with a knife. I dragged out all the contents of the envelope with tweezers, I thought it would be a mess of paper, but who knew that there was an envelope in the envelope, and it was wrapped in three layers of tape.

Cheng Yang expanded the envelope with his hand, and found that there were words in the envelope, so he hurriedly unfolded the envelope from the pasting place of the envelope. After rummaging through the drawer for a long time, he found a magnifying glass, and began to look at what was written on the envelope, thinking that if this letter was sent to Lu Qiu, Lu Qiu would definitely not see that there were still words in it.

Cheng Yang, Lu Qiu:

"I know you've known each other, and I know you've always wondered why I put the two of you together, but you're both the ones who went into that cave, and I was wrong about the time, and the other people I went in with me were getting old, but I fixed everything."

"I was rescued by people like you, but the two of you were rescued after the beginning, you will know when you see this letter, I will not say much and go to a new cave with your parents, I have a copy of the information stored in the Li family's bun shop, you can go over and retrieve it when you are free, keep it and don't say it."

"Zhang Ting"

Cheng Yang read the letter and found that there was still some messy content, picked out a few more important ones and put down the envelope bag after reading it carefully, night has come, although this is not the central area, but the street has also begun to usher in the evening rush hour.

It's been a day since he saw Lu Qiu, Cheng Yang couldn't bear the temperament in his heart, and walked towards Lu Qiu's house, Cheng Yang leaned on the door and listened, there was no sound in the house, it seemed that there was no one in the house.