Yi Yu is very curious about the Xiling pool. From Li Chen's memory, it can be seen that Li Chen, Shen and Lu all have experts who enter the time valley. It seems that they have got an ancient map, which contains the secret of the Xiling pool. It's a pity that Li Chen didn't see the ancient map.

in addition to the soul washing pool, these three families have entered the time Valley successively. It seems that they have another purpose. They even thought of the time rule crystal of this small world.

since time can be reversed in this time Valley, there must be a time rule crystal....