The cave at the source of the river is a typical karst cave, formed by groundwater erosion for many years, and if you change it to a person who studies geology, you can definitely pull out a long paper, and replace it with An Yizhi, and his feelings are just three words. Pen "Fun" Pavilion www.biquge.info

Black, cold and slippery.

Needless to say, it's strange if it's not dark in the cave, and a light spell on the head solves the problem.

It is normal to be cold, and friends who have traveled to the cave should know that the temperature in the cave is much lower than the outside world, and the deeper you go, the more obvious it is, and the water temperature here can be regarded as cold and biting. However, it is also easy to solve, and one more set of two ornament-level clothes can be done.

The problem is slippery.

They followed the sides of the water flow in the cavern, but at first it was fine, the ground was relatively dry, and the deeper they went, the more slippery it became, until there was no soil at all behind them, and it was just a large smooth stone that had been washed away.

Elph's agility as a tree spirit is naturally not low, and the agility attribute not only affects movement speed, but also affects attack speed, balance and other agility-related attributes, so Elph has no worries about stepping on smooth stones. An Yizhi doesn't have to worry about it, he has boots with the ability to walk on the water, and it is easier to tread water directly, but the soles of his feet feel cool.

And John ......

After the cargo fell into the water for the second time and fished her up, Ann had to summon the Phantom Pony again, but the horse was reluctant to let it carry John again, and it was not until John felt the fruit left over from the previous banquet that he reluctantly agreed to let John get on his back.

An pointed out that he didn't understand, 34D sticking to the back of the neck is what many people dream of, and you are still unhappy?

- To the Phantom Pony, it doesn't understand why humans have two large balls of flesh on their chests, and besides, they don't have the same aesthetic as humans and are not unicorns......

After solving the problem of delay, the three of them moved faster, but the cave seemed to be very deep, and they still didn't see the bottom after walking for about 30 minutes, and they didn't know where to go.

An Yizhi guessed that the Demon Lord's sealing place was at the source of the river because the water quality of the Misty Forest was polluted, and the Demon Lord's sealing place was probably very close to the underground water veins, and the concentration of negative energy and toxins contained in the water here increased as they deepened, further confirming An Yizhi's conjecture.

But Elph said that there were many more caves like this in the Misty Forest, and she couldn't be sure if this cave could lead directly underground, because no one in the Dryads would run into the depths of the cave.

If they guess wrong, they will waste a lot of time running in vain. But there is no choice, now that the Misty Forest is full of demons, even Ann Yizhi, who has the Book of the Dead, can't fight so much.

The three of them, who were moving forward with a hint of trepidation, finally came to the end of the cave, and Ann reached out and knocked on the stone wall at the end, and the echo sounded solid.

"Did we pick the wrong place?"

Elph was uneasy, she said with some agitation.

"But we can't go to other caves now."

"Maybe we can go back first and find more people"

"An Yi pointed out that more people will expose the target......"

The Phantom Pony snorted, the cold temperature in the cavern making it uncomfortable.

And our protagonist doesn't care about the conversation between the two girls, he knows that this must be the entrance.

The system will not arrange unsolvable tasks, and naturally the clues he gives are not useless, since the information that can be known to the player points to this cave, then this cave must have a way to enter the underground, unless An Yizhi misunderstood the system's prompts.

He first looked at his feet, and he could see a small hole under the surface of the water illuminated by the dancing light, from which the groundwater gushed out.

Could it be that the hole is the entrance?

Possibly, but not absolutely.

If it's just a trivial matter to get into the water, John has a water breathing spell, but the water here has a strong negative energy plus the temperature is extremely low, if there is no heat preservation and resistance to negative energy spells, you can't go up.

An Yizhi guessed that this hole could be a shortcut, according to the urine nature of the system, there are several ways to set up entrances and exits, some are conventional, that is, you can enter and exit without relying on any skills, and some require certain skills to enter and exit, this kind of entrance and exit will generally lead to a shortcut, but the system cannot only arrange entrances and exits that require certain skills to enter, because not all players have them, and he must consider entrances and exits that can be opened without any skills.

After a little consideration, An Yizhi had a guess in his heart, and he said to the two girls:

"Look around, pay attention to a straight gap, about three or four centimeters long."

"Did you find a clue?"

Elf asked.

"Let's see, if it weren't for that gap, I think we'd really be in the wrong place."

Controlling the dancing light technique to stick to the cave wall for lighting, the three of them groped inch by inch, looking for the gap that An Yizhi said.

As a result, I really found it!

"In my case, it's blocked by dirt"

John said happily, rubbing his fingers a few times to scrape off the excess dirt.

An Yizhi leaned over and saw that it was a gap about the same size as expected, and if he hadn't looked for it carefully, no one would have thought that such an inconspicuous gap would be a keyhole.

As for the keys......

An Yiyi touched out the commemorative knife of Mi Sizhuo, it was the knife that Elph gave him that started the epic mission, so he wondered, is this knife also the key to open the seal?

He inserted the knife into the gap, and when he was hesitating whether to turn it, there was a sound like a shaking mountain shaking that shook the eardrums, and countless bubbles rolled out on the water not far away.

"Don't panic yet, it shouldn't be an earthquake"

Comforting John, who grabbed him by the sleeve and didn't let go, they were in the right place.

In other words, you are a guy who is good at the change system is afraid of a ball, as long as you don't get smashed to death on the spot, even if you are buried in the ground, the change mage can easily run out.

The shaking came and went quickly, and after a few seconds, the shaking stopped, and An Yizhi saw the knife stuck in the gap light up with a flash of light, shattering.

Then the gap began to stretch until it was more than two meters long, and at the same time the gap cracked left and right to become a door, and you could see a tunnel behind the door, and some scattered steps.

"Dancing Light Technique!"

An Yizhi released the dance light technique again, and the four light balls went in to illuminate first, and then summoned three skeletons for them to explore the way ahead, and then entered with the two girls.

"The door is closed!"

John exclaimed.

As soon as the three of them entered, the stone gate suddenly closed, and it was estimated that they would not be able to get out without finding another exit.

"Don't worry, I guess there should be other exits"

An pointed and looked around, and said casually.

The tunnel is a magical excavation project, which can be seen from the overly smooth stone walls, and there are some lighting runes distributed on the stone walls, so the tunnel is not dark.

"Master, this is the mark of Mistak"

Hela pointed to the badge on the wall and said that it was further proof that she had found the right place, and that the tunnel led to the Demon Lord's seal.

Since Mi Sizhuo has left a way for future generations to re-seal the demon lord, there should be no traps, but carefully sailing the ship of ten thousand years, An Yizhi still decided to let the skeleton go first, and it would be most appropriate for the three of them to follow behind.

Seeing that it is getting closer and closer to the sealing place, I wonder if it is still too late......

An Yi pointed to the tunnel that stretched to the end of his vision, and had some bad premonitions in his heart, I am afraid that this will not go so smoothly.

–‐‐——–‐‐——

On the other side, the Banyan Tribe-

Greif really wanted to lie down and sleep solidly, but he knew that he couldn't do this, the mages of the Three Towers Alliance still needed his leadership, and the demon still didn't give up, still peeping, waiting for them to show their flaws.

Thinking about it, it seems that Greif has never been so tired since being taken out of the Northlands by Jascord, and the bloodline of the barbarians makes it difficult for him to learn spells, but it also brings extraordinary energy.

He would think that when he was young, he would not be tired of chasing prey for more than ten kilometers with an axe, and at that time he still felt that spells were not interesting, how could there be the enjoyment of melee swords.

He now knew that spell-casting combat was not at all easier than melee combat, wielding weapons only consumed physical strength, and spell-casting was a double consumption of physical strength and magic power, especially the feeling of magic power being exhausted, and the uncomfortable energy was as if the soul had become weak.

Even the strongest Greif was so tired, not to mention the other mages, many of them simply fainted and fell asleep on the walls, and some dryads took out homemade leaf quilts to cover them to keep them from catching a cold.

It has to be said that it is a miracle that there have been no casualties in the battle so far, all thanks to the Treants.

The tree elves of the Banyan Tree Tribe and the mages of the Three Towers Alliance did not suffer any casualties, but the Tree People did, after all, they rushed to the front line.

Even though the level of the Treants is above level 40, there are too many demons, and it is inevitable that many Treants will fall.

Greif saw several treants outside the city holding hands around their dead companions, whispering something, but unfortunately he didn't understand the treants and had no way of knowing what their eulogy was.

The corpses of the dead treants decayed rapidly during the chanting, eventually turning into a pile of wood powder that merged with the earth. It is a ritual for the tree people, who are born in this forest and who die to provide nourishment to the forest and enter the next cycle.

Greif has some realization, nature has never been a one-sided demand, no matter how much you ask, one day you will pay it back.

"The Emerald Tower says that support is being gathered, but supplies can be delivered immediately"

His lieutenant interrupted Greif's deep thoughts, but the good news was encouraging.

Now they lack everything.

Before he first came, Greif didn't dare to underestimate the importance of this mission, and brought a lot of consumables to fight the demons, which was one of the reasons why they were able to resist so far, but those things had long been consumed, and there were not even a few magic energy crystals left to replenish the magic power. With the Emerald Tower's supply and the Treants' assistance, Greif is confident that he will persevere.

Holding the last piece of magic crystal in his hand and greedily absorbing the magic in it, Greif was shocked. This mana is far from replenishing his total mana, but it shouldn't be a problem to use it to create a one-time teleportation array.

I hope you're hurrying......

This was not only said to support, but also to Ann, and Greif knew that the next demon attack would inevitably be a vicious battle, and they would bring enough troops to dismiss it far from being as easy as this time.