On this day, in the afterglow of the sunset, after releasing their pent-up emotions in the cave again, when the two came to the stream to wash their bodies, the attentive Yuan Bingya suddenly discovered a situation.

She said to Kang Mingsong with some surprise: "Brother Song, the water level in the river seems to be lower than a few days ago!"

After Yuan Bingya's reminder, Kang Mingsong also noticed that the water level of this stream seemed to be really lower than before, not much, that is, about five centimeters. If you don't pay attention, you won't notice this change at all.

Thinking that Qianhui Mountain has been sunny for four or five consecutive days recently, Kang Mingsong was also relieved.

According to his calculations, the stream in the small basin did not come from a real underground river, but probably a deeper natural stream that dived down due to the obstruction of the mountain and then flowed out of the small basin.

These days, because there is no rain in the mountains, the supply of water is somewhat unable to keep up, and the water level of this stream will naturally drop.

Suddenly, Kang Mingsong thought of something again, and he said to Yuan Bingya in surprise: "Bing Aya, we may be saved!"

"Huh?" Yuan Bingyan looked at Kang Mingsong in surprise, not knowing why he said this.

Cummingsong didn't explain, but said, "Let's go, let's go to the cliffs upstream and downstream." ”

Yuan Bingyan glanced at him with some disgust at Kang Mingsong's tricks, but he still put on his clothes and followed him to the cliff at the source of the stream.

………………

When the two of them came to the northeast corner of the small basin, not far from the cave where they lived, at the source of the stream, that is, under the cliff, what they found made Kang Mingsong laugh happily: the upper edge of the bubbling spring hole, the contact between the water body and the mountain wall was indeed not completely sealed as before, but a gap about two fingers together!

Similarly, when they went to the southwest corner where the stream dived into the cliff to observe, the same situation occurred.

Kang Mingsong said to Yuan Bingya with confidence: "Bing Aya, according to this situation, as long as it doesn't rain for a week, we can leave this ghost place!"

Yuan Bingyan is also a very smart girl, and after Kang Mingsong pointed out the situation, she naturally knew the reason why Kang Mingsong said this.

Thinking that she would soon be able to leave this isolated place, Yuan Bingyan was also very happy.

Although here, she can get along with her beloved without interruption, but after a long time, she also feels very bored.

In the end, Kang Mingsong said to Yuan Bingya: "From tomorrow, we will start preparing a small bamboo raft, and when the water level drops enough for us to pass, we will leave this ghost place!"

"Hmm!" Yuan Bingyan nodded with a smile.

………………

Seeing the hope of leaving, both of them were in a good mood, so it was another indescribably wonderful night.

The next day, the weather was still fine.

Early in the morning, Kang Mingsong and Yuan Bingyan ate some wild fruits, drank fish soup made from wild vegetables, and then went to a bamboo forest in the southeast corner of the small basin to cut down bamboo and prepare to weave a bamboo raft.

Without the right cutting tools, weaving a bamboo raft is not an easy task. Kang Mingsong could only use the only pointed tool hammer to slowly chisel down the wrist-thick wattle bamboos of adults.

To weave a bamboo raft that can carry two people's weight, you need a lot of bamboo. After all, the weight of the two of them together is about two hundred and thirty pounds. Coupled with some of the items they wanted to take out, the weight was definitely more than two hundred and fifty pounds.

It took Kang three days to get enough bamboo.

Then, he spent another day in the woods of the small basin and got enough vines to weave a bamboo raft.

During this time, the weather has been good and there is no rain, so the water level of the stream has been dropping. By the time Mr. Cummingsong had prepared the vines for weaving the raft, the water level had dropped by almost one meter. According to Yuan Bingya, who has been observing the entrance to the underground river, this water level should be able to accommodate their bamboo raft to pass.

In order to determine the situation, Kang Mingsong personally went to check it again, and found that the space exposed on the water surface was indeed barely allowed for them to pass on a bamboo raft.

In order to avoid long nights and dreams, this night, the two weaved a bamboo raft overnight, and then pushed the bamboo raft into the stream before dawn came.

It's summer, and if it rains, the stream will swell, and the idea of leaving here will be ruined.

When the two of them took a bamboo raft down the water, getting closer and closer to the entrance of the underground river downstream in the morning light, the two of them actually had some reluctant emotions.

The experience of these 20 days is very commemorative for Kang Mingsong and Yuan Bingya.

If it weren't for this experience of living and dying together, their relationship would definitely not be as deep as it is now, and the relationship between the two would definitely not have developed to this point.

Kang Mingsong took Yuan Bingya into his arms and said softly: "Bingyan, when we have money, developing this place is definitely a very attractive attraction." When the time comes, we can also come here to play at any time. ”

Yuan Bingyan nodded, but did not speak.

………………

When the bamboo raft carrying Kang Mingsong and Yuan Bingyan slowly flowed down the water into the ground, the surrounding environment fell into darkness again.

Because the time when the two left was originally the dawn when the sky was not completely bright, they quickly adapted to the environment.

In fact, the reason why he chose to leave before dawn was not only because he was in a hurry to leave, but also because he was adapting to the environment.

After all, they don't have lighting tools, and if they leave during the day, I'm afraid it will take a long time to get used to the environment in the underground river. It's very dangerous, because no one knows what's going on inside the underground river.

In order to avoid hitting their heads against the stone wall above, the two of them have been lying on the bamboo raft while drifting down the underground river.

But Rao is like this, and the bamboo raft has almost run aground in the underground river several times. In particular, at a bend, the bamboo raft passed by a fraction of a centimeter, and it almost got stuck there.

At this time, Kang Mingsong was a little glad that he and Yuan Bingyan were not tall people, and the length of the bamboo raft they weaved was not too long, only less than one meter eight, and the width was only one meter two, otherwise I would have been trapped in the underground river this time.

After drifting down the dark underground river for an unknown amount of time, they finally saw the light again. Kang Mingsong knew that the two of them had finally come out of that small isolated basin!