Although the river looks dark from a distance, in fact, the water is very clear.

Through the current, Ji Ning could clearly see that at the bottom of the water, which was not too deep, there were white bones everywhere. The bones covered the whole river bed and stretched forward. Everywhere he could see, there were bones, as if the river course was paved with white bones, and the smell came from it.

Obviously, these bones have a long history, otherwise, it would not be the faint smell, but the smell.

Ji Ning can recognize that the bones are animal and human. They are fragmented and scattered quietly in the river. Under such circumstances, they are extremely gloomy and terrifying.

Even if Ji Ning was not afraid, but seeing such scenes, he had goose bumps and couldn't help saying, "well, what's the matter?"

Tang Feng walked towards the upstream direction, walked out more than ten meters, kicked on the ground with his feet, and in the open water channel, there was a clear sound of metal collision.

Ji Ning hurriedly followed. At the foot of Tang Feng, there was a very thick metal chain, which was covered with patches of copper and green. The chain was broken into two parts in the middle. One end of the chain was inlaid on the stone wall, and the other end extended into the water. It was buried under the white bone. I couldn't see what was going on below.

Ji Ning wants to stretch out and pull out the chain to see what happened. He is stopped by Tang Feng.

"Don't move anything here for the time being." Tang Feng light said, eyes along the direction of the river, swept a circle, seems to be looking for something.

Ji Ning drew back his hand and looked around. He said: "it seems that the chain is to lock something. However, it has already run away. Judging from the disconnection, the time to break free is not short."

Tang Feng's face is very calm: "it's Jiao."

Seeing this, Tang Feng guessed it.

"Professor Meng, the one they met?" Ji Ning slightly surprised way.

Tang Feng nodded and said: "it must have been that year when the dragon was making trouble, he was trapped in this place. But the chain could not trap him for a long time. When he broke free, he took this place as his nest. Whenever he got his prey, he took it here to devour it."

Ji Ning did not understand the way: "it is so powerful, who can trap it?"

"Jiao also gained more strength after years of cultivation. At that time, he would not be so domineering. Besides, at that time, there must have been an extremely powerful clan in Kunlun mountain." Tang Feng explained quietly, "the chain that locks it is made of copper, which shows that copper was the most common metal at that time. I guess it was not later than the spring and Autumn period."

Speaking of this, Tang Feng's mind moved slightly.

The copper plate with a map of the changsun family is the spring and Autumn period, which is also the time of the spring and Autumn period. What is the connection between the two?