Inside that secluded and dark cave in the mountains.

"Senior Brother Cheng, Senior Brother Li and the others still haven't responded," a young monk said to the ugly-faced monk with a respectful expression, holding a sound transmission jade slip in his hand.

"It should have happened to something", this ugly man is Cheng Wentong, at this time he secretly put away a jade slip, and then the magic of both hands changed, and several fluorescent rays shot out, blending into the light mask at the entrance of the cave, and after the light mask squirmed for a while, it immediately returned to its original state, and it was not seen any difference from before.

"I hope this blood can control this spirit corpse", Cheng Wentong stood in front of the blood pool, looking at the small amount of blood in it and muttered to himself, although there was not much blood, he could feel a slight fluctuation in spiritual power.

Cheng Wentong patted a pitch-black bag tied around his waist, a black light sprayed out, and fell into the blood pool, the black light dissipated, and a slightly tall dry corpse stood in the blood pool, motionless, with a pale yellow talisman attached to his forehead.

I saw Cheng Wentong pinching the middle finger of his right hand, and the spiritual power flowed, mixed with blood and sprayed directly on the body of the spirit corpse, shaking his fingers in the air, and a strange rune was drawn on the body of the spirit corpse, and in a short time, it was painted all over the body, and finally pointed to the forehead of the spirit corpse.

Then Cheng Wentong bit the tip of his tongue, a mouthful of blood spurted out, and a cloud of blood mist floated in front of him, and a stream of divine consciousness and spiritual power merged into it, only to see the blood mist squirm in the air, slowly condensing into a rune mark.

Under Cheng Wentong's fingers, the runes flew out, and through the rune, they melted directly on his forehead, connecting with those strange runes.

After making all the preparations, Cheng Wentong's ten fingers on both hands were like flying, and several magic tricks hit the spirit corpse, and he saw that the blood mixed with spiritual power in the blood pool spread upward along those runes, directly integrating into the mark on his forehead.

As time passed, the blood in the pool became less and less, and the absorption power of the sigil became weaker and weaker, but it still persisted.

"It seems that this blood is still a little insufficient", Cheng Wentong looked at the blood in the blood pool that was about to disappear, his brows furrowed slightly, and he thought in his heart.

"Isn't there any news from Senior Brother Li yet?" Cheng Wentong turned his head to look at the monk next to him, and asked with a normal expression.

The monk didn't feel the reaction of the sound transmission jade slip in the storage bag, but he still probed into it with his divine sense to check it, and then saw Cheng Wentong coming over, but he didn't care.

After walking in front of him, Cheng Wentong suddenly stretched out two fingers and pointed at his lower abdomen, and a stream of spiritual power followed, blocking the dantian and making it unable to lift his spiritual power.

"Senior Brother Cheng......", the monk looked at Cheng Wentong with a panicked and puzzled expression, and hurriedly stepped back.

"Senior Brother Ma, I'm sorry, borrow your blood for a while", Cheng Wentong smiled, bullied up, and counted the points with two fingers towards his body, and Senior Brother Ma finally gave up and fell to the ground, begging with a frightened face.

Cheng Wentong was unmoved, and a stream of spiritual power was released, holding up the body of Senior Brother Nama, and one after another spells shot out and submerged into his body.

Subsequently, the spiritual power in Senior Brother Nama's body spread uncontrollably from the meridians to the outside and melted into the blood, which naturally made him very painful.

After about a meal, Cheng Wentong saw that the spiritual power in his body was fused with blood, so he raised his hand and waved, and a wound appeared on the wrist of Senior Brother Nama, and the blood sprayed directly into the blood pool from there, and was naturally absorbed by the spirit corpse.

After a while, Senior Brother Ma couldn't squeeze out a drop of blood in his body, Cheng Wentong withdrew his spiritual power, and Senior Brother Ma's body was weak, and he lay on the ground, already dead.

Gradually, the blood pool had bottomed out again, and the absorption power of the strange mark also stopped at this time, Cheng Wentong played a few more tricks on the forehead of the spirit corpse, and drilled out a general mark from the head of the spirit corpse, but the blood was much darker, and it blended with the mark on the forehead at this time, and a strong coercion diffused out.

Another spell shot out, and the strange mark wriggled and burrowed into the corpse's forehead.

......

In the dense forests of the valley, three figures cautiously marched forward, it was Yun Yifei, Yun Xiang and Ren Zeyu.

As far as the monk's speed was concerned, the location of the cave was not too far, and the three of them were careful not to increase the speed to the fastest, and searched around the cave, but did not find any other monks, so it was naturally a little delayed.

At the foot of an inconspicuous mountain, Yun Yifei and the three of them observed for a while, and saw that there was nothing unusual nearby, before they came closer, and it was not difficult to find the formation light shield in front of the mountain wall.

"It seems that the monks inside have not left," Yun Xiang said.

"After opening the shield of the formation, first throw a few talismans into the cave and catch them off guard", Yun Yifei whispered, then took out a jade slip and pressed it towards the light shield in front, this jade slip was naturally obtained in the storage bag and was used to enter and exit the formation.

Yun Xiang and Ren Zeyu took out the talisman and prepared, only to see that the jade slip pressed on the light mask emitted a wave of fluctuations, but the light mask did not melt out of a portal as expected, obviously this formation had changed the method of entering and exiting.

"Be careful, since the other party has changed the method of entering and exiting this formation, it is obviously aware of it. Under Yun Yifei's soul search, he determined that this jade slip was in and out of this formation, and the jade slip in the two storage bags was the same, and at this time, he naturally knew that the other party had made changes.

"Since the other party is aware of it but has not changed his hiding place, I think it must be something to rely on, could it be that there are other Soul Refining Sect cultivators nearby?" Ren Zeyu said with a somewhat ugly face.

"In the memories of those two monks, apart from their team, there are no other monks nearby, even if other monks from the Cheng Wentong Transmission Sect will not arrive here in a short time, I still have some time to wait. Yun Yifei analyzed, the three of them stepped back, after all, if there were monks in the cave, they would definitely find out about the three of them, and they had to guard against it.

"Could it be that Cheng Wentong is still refining the spirit corpse, and he hasn't had time to find another place yet?" Ren Zeyu guessed.

"Brother Fei, is there a way to break through this formation?" Yun Xiang said to Yun Yifei while guarding his surroundings, seeing her ask like this, Ren Zeyu also looked at Yun Yifei with a surprised expression.

"Under normal circumstances, you still have to study this formation carefully, but at this time, with this Broken Formation Jade Slip as a basis, it saves a lot of trouble. Yun Yifei shook the jade slip in his hand and said.

"If Brother Yun can really break through this formation, then hurry up, I'm afraid it will change later. Ren Zeyu said with a look of surprise.

Yun Yifei nodded, and his divine sense probed into the jade slip to confirm the magic tricks stored in it again, and then the ten fingers of both hands changed, and several magic tricks shot out, submerging into the layer of formation light shield.

I saw a slight tremor from the formation light shield, the light on it flickered, the translucent turbidity gradually dissipated, and the scene inside became clearer.

Once a set of formations is refined into shapes, there is naturally a portal to enter and exit the formation, and this requires the opening of the magic technique, but it does not mean that the opening method used in the same set of formations is the same, so it is too insecure for the monk.

For example, if it is the same set of quadrangular arrays, not only if a monk can open his own quadrangular array, he can also open the quadrangle of all monks, even if the formation mage is faced with the formation he has refined, he does not dare to guarantee that he will definitely be able to open it.

Because the same set of formations has variability in its layout, in addition, the magic used can also be changed, the formation mage refining a set of formations naturally has its most concise control method, and the arranger often uses the forbidden method to hide the most concise method, and even splits the method and integrates it into other methods, so that even if the formation mage refining this formation uses the previous simple method, he cannot control this formation.

Therefore, with the same set of formations, one spell may be able to open the portal, or more than a dozen spells may not be opened, in this case, the monk will often store the spell of controlling the formation in the jade slip, and in the future opening, there is no need to release the spell, once and for all.

Although Cheng Wentong changed the opening method of the formation, the most direct and concise method for controlling the formation could not be changed.

Yun Yifei also made an analysis in the jade slip that recorded the formula, and according to his knowledge of the formation at this time, he could naturally see the doorway, no matter how hidden the magic trick was, no matter how much it changed, it was also the formation itself that remained unchanged.

Through the formation method of the combination in the jade slip, Yun Yifei also had a general understanding of the nature of the formation, and the formula released at this time was to verify his guess, seeing the reaction of the formation, Yun Yifei was naturally more convinced of the guess in his heart.