The two of them did not change direction when they encountered a fork in the hole, but only identified one direction.

The two of them hadn't been able to get out of the tunnel after a meal. Because the tunnel is not high, they can't walk straight in the tunnel, so after walking this way, both of them felt back pain, so they sat down and wanted to rest before walking.

Yun Ying suddenly pointed to the notch on the wall and said in surprise, "Big brother, look! ”

Ding Cheng looked at it, wasn't it? The notch on the wall was the one he had walked up when he had walked here before. Could it be that for so long, both of them have been going around in circles in the tunnels?

Yun Ying pondered for a moment and said, "It seems that the tunnels here are not simple, and it is likely that they are arranged according to a certain formation. Someone is doing tricks and feet in the tunnel, and we seem to be walking in a straight line, but in fact we are walking in an arc. ”

Ding Cheng hurriedly said: "What can we do about this? If we can't get out, then won't we have to be trapped and die here? Could it be that we have to make a hole in the top of our heads? But the soil here looks very hard, and I'm afraid we will die of exhaustion if we don't hit half of it." ”

Yun Ying smiled and said, "How can we have such a great ability to make a hole here in a moment or three." In fact, we are going around in circles here, and it is this special arrangement in the tunnel that allows our eyes to deceive us. In other words, the straight line we see is actually an arc, and if we go forward along this arc, don't we just go around it again?"

Ding Cheng smiled: "My sister is really smart, but what should we do at this time?"

Yun Ying said: "Actually, it's very simple, as long as I cover my eyes with a piece of cloth and just follow my feelings, we will never deceive us again." ”

After speaking, Yun Ying took out a silk scarf from his sleeve and covered his eyes and walked forward. Ding Cheng followed closely behind Yun Ying to protect him. Cloud Shadow walked forward without stopping, although she was blindfolded and couldn't see the scene in front of her clearly, but she passed unhindered along the way and did not hit the wall. In Ding Cheng's opinion, Yunying walked in an arc, constantly deflecting to the left.

The two of them didn't walk very fast, and they didn't go back to the place they had walked before.

Suddenly, Ding Cheng heard a roar behind him, and felt the ground under his feet tremble, and at the same time, a strong wind hit his back. When I looked back, I saw a large round granite rolling towards the two of them from the other end of the tunnel.

The size of that piece of granite was almost the same as the entrance of the cave, and it was terrifying. Ding Cheng hurriedly pulled Yunying and ran forward, and in a hurry, he couldn't care about any straight arcs anymore.

The two of them ran for dozens of feet, and suddenly there was no path in front of them. Seeing that the cobblestone rolled towards him and Yun Ying, Ding Cheng hugged Yun Ying against the wall, and involuntarily slammed it back, but he didn't expect that the cave wall behind him was squeezed through a big hole, just enough for the two of them to pass through.

By this time, the cobblestone had reached three feet in front of the two of them. Ding Cheng pulled the cloud shadow and drilled through the hole. There was a muffled thud, and the cobblestone crashed into the hole and filled a pile of dirt.

As soon as the cobblestone closed the hole, it immediately became pitch black. Ding Cheng took out the fire and shook it, and saw a stone table three steps in front of him, and there was an oil lamp on the table. Ding Cheng walked over and lit the oil lamp.