Su Caiyin looked at the old woman in front of her in surprise, she was already very old, her back was not straight, but she stood upright, her hands folded on her lower abdomen, her face was expressionless, and a pair of somewhat chaotic eyes were looking at her.

Su Caiyin took out the token.

"Well, go ahead, stay at the spring, and come out in time when you feel the spiritual energy in your body is full, otherwise you will have all your meridians cut off and your body will explode and die."

The voice was still in the air, and her person was gone.

Su Caiyin stayed in place for a while, and then walked towards the Holy Pond Spring.

It is not for nothing that the Northern Underworld Academy is respected so far, it may seem inconspicuous on the surface, but in fact, there are not many strong people who silently guard it, but these people are guarding in the shadows, if the academy does not encounter any major events, maybe these people will never surface.

After seeing Su Caiyin enter the range of the Holy Pond Spring, the students gathered outside the forbidden land finally dispersed reluctantly, they knew that with Su Caiyin's qualifications, it was impossible to get out of it in a day, at least a day and a half or more than two days, it was better to come back at that time.

The Holy Pond Spring was a large spring water, and as soon as Su Caiyin stepped around it, he felt the spiritual energy surging nearby.

Suddenly, Su Caiyin's eyes froze.

She saw where the spring was.

The fountain is a circular ring, about the size of one person, which means that it can only accommodate one person at a time.

Su Caiyin felt it and found that if he didn't enter the spring water, he could feel the richness of the aura just by standing outside, at least three or four times that of the outside.

The moment she descended into the water, she narrowed her eyes in comfort, and with a low groan, she walked gently towards the spring.

Although the range of the spring water is quite large, she only knows that it is only as deep as her thighs after entering the water, and after walking to the spring, she sits cross-legged in it, closes her eyes, and the aura in her body begins to surge.

Just now in the Heart Refining Tower, she suffered a lot of injuries, there are too many remnants in the tower, she can't take care of the front and the back, no matter how vigilant she is, she will still inevitably be injured, but the injuries are all within the tolerable range, if not, she would not be able to pass all the way through the tenth floor.

Although her body was injured, as Vice Dean Lu Chen said, those stimuli were not pain but tonic for the body, and every time she was hammered, she felt that her flesh was getting more and more solid.

Although it is still soft and elastic to the touch, it has a toughness that others do not have, not to mention the invulnerability of the sword, but it is equivalent to wearing a defensive robe.

"I only refined the skin and flesh in the Heart Refining Tower, but it didn't help me much for cultivation, I don't know if I can gain more in this holy pond spring."

Su Caiyin thought in her heart, and she was even more immersed in cultivation.

But after a while, she opened her eyes.

"Through the clothes, the aura of the spring water seems to be a little blocked? Well, let's go. ”

As soon as his mind moved, the clothes on his body left his body and flew to the shore.

It really worked!

Su Caiyin had a smile on her face, after removing her clothes, she felt that her body was much lighter, and without those barriers, the aura absorption became smoother and smoother.

She was completely immersed in cultivation, knowing that the forbidden place was guarded and no one around would come to disturb her, so she was very relieved to let go of her guard.

Time passed little by little, and the coercion on Su Caiyin's body was also getting stronger, and she didn't know how many times she had broken through, but she only knew that she was focused on cultivation without distractions, and enjoyed the pleasure of improving her strength.

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