"NND, it turns out that this thing is the spiritual energy supply provided by the old bastard of the ancestor of the Mu family!" Wu Song sneaked over quietly, and at the same time observed the two guards with his auxiliary device, and found that the tall old man in armor was a sixty-three level knight, and the short and fat middle-aged bearded man was a sixty-sixth level thief, among which the thief was pouring a milky white liquid on the silver-white crystal, and the knight was very vigilant and kept wandering around.

Shake off the stab!

Wu Song was about twenty-five meters away from the thief and directly used the hand stab, but what he threw over was not a dagger, but a flame knife, the thief was startled by the sound of the flame knife breaking through the air, and directly used a side move, but just when he was about to enter the stealth state, Wu Song had already rushed to him with a charge.

Stun Storm!

Wu Song used a stun storm to send the thieves who broke free from the stun effect of the charge and the knights who rushed to support the thieves into the stun effect, and then cut the thief's throat from the back of the thief with the strangulation ability, and the knight broke free from the stun state, and when he saw that the thief had hung up, he immediately lost the confidence to continue fighting, and the guy turned on a short-term invincibility effect and turned to run.

But where would Wu Song let him escape so easily, this guy waved the assassination short sword and cast a bloody air slash directly on the wall at the exit, the wall could not withstand the impact of the huge force of the blood air slash and collapsed with a bang, directly blocking the way out, the knight saw that the road was gone, and turned his head to fight with Wu Song, but found that Wu Song entered the stealth state and disappeared without a trace.

The knight's invincibility is a very powerful ability, and after level sixty, the knight's invincibility effect can last for about five or six seconds, and five or six seconds is not a short time, but it is obviously impossible for him to find the invisible Wu Song in these few seconds, and as time passes, the beads of sweat on the knight's face will come down.

"I surrender, Master Wu, please don't kill me, I am willing to be your subordinate, and I am willing to sign a master-servant contract with you!" Finally, the knight's psychological defense was crushed by the fear of death, and he had secretly observed the battle between Wu Song and Julio before.

There was a strong sense of awe for Wu Song's ability, but now the sixty-sixth-level thief companion was killed by the other party in a face, and he didn't even have the ability to resist at all, which made the knight fall into deep fear, and in the end, the desire for life overcame the loyalty to the ancestor of the Mu family, in order to survive, the knight turned his back on the ancestor of the Mu family, and also betrayed the so-called chivalry, he threw the shield and sword combination in his hand aside, and suddenly collapsed to the ground.

"Very well, looks like you're a sensible fellow!" Seeing the knight's surrender, Wu Song nodded with satisfaction, and then signed a master-servant contract with the fact without any pity, although with his current ability, he was not afraid of what tricks the other party would play again, but for this kind of soft egg, Wu Song felt that it was safer to have the last contract, otherwise maybe one day this guy would turn his back on himself in order to survive, and after completely controlling the knight's life and death in his hands, Wu Song smiled and pointed to the crystal in the center of the magic circle and said, "Okay, I'm in a hurry now, you tell me, What the hell is going on with this thing? ”

"Okay, dear master, I, Mu Guangyun, am willing to answer all your questions! From now on, you are my Mu Guangyun... The knight began to show loyalty with one mouth, which made Wu Song choke enough, this guy waved his hand and said, "Okay, okay, don't talk nonsense, say something useful, tell me what this magic circle and that crystal are all about." ”

"This is a secret magic circle left by the ancestors of the Mu family, only the Mu family who ascend to the position of the ancestor of each generation can understand the true purpose of this magic circle, but according to my observation, this magic circle seems to be able to provide huge spiritual energy support for the old ancestor, as long as it is within the range of the Black Shadow Mountain, the old ancestor activates the special ability, and he can obtain endless spiritual energy from this magic circle, and all we have to do is to replace the silver ice energy crystals in this magic circle."

"Do you mean to say that the endless spiritual energy of the Mu family's ancestors is transmitted from these magic circles, and as long as these silver ice energy crystals are constantly replaced, the Mu family's ancestors can obtain endless spiritual energy from them?" Wu Song's eyes widened, although he had already guessed in advance, he couldn't help but be taken aback when he heard about the effect of this magic circle.

"Yes, my lord, as long as these secret magic arrays are not destroyed, the Mu family's old ancestor will definitely have endless spiritual energy within the scope of the Black Shadow Mountain." The knight Mu Guangyun gave Wu Song an affirmative answer.

"No wonder that guy always stays on the Black Shadow Mountain and rarely goes out, it turns out that there is this kind of setting, NND, endless psionic energy, how many times can this thing increase its combat power, no wonder that old guy can make that huge ice double one after another. This thing is fucking enough BT! ”

Wu Song nodded, and from Mu Guangyun's words, it seemed that his previous guess had been confirmed, and after figuring out the endless spiritual energy source of the Mu family's ancestors, Wu Song looked at Mu Guangyun with interest and said, "Okay, since this thing is so magical, I want to know if there is any way to destroy this thing, enh!" I mean, the kind of way that doesn't destroy the structure of the circle itself, but can make the circle unable to transmit spiritual energy to the ancestors of the Mu family? ”

"It's easy." Mu Guangyun nodded and said, "This magic circle only plays a role in transmitting spiritual energy, the inexhaustible spiritual energy of the ancestor lies in the silver ice energy crystals in the middle of this magic circle, as long as the silver ice energy crystals are removed from the magic circle, the magic circle will naturally not be able to transmit spiritual energy." ”

"Excellent! This circle is up to you! I'm going to destroy the other circles! Wu Song said as he forcibly broke through the road blocked by gravel and rushed out directly.

There is a master-servant contract restriction, he believes that Mu Guangyun will complete the things he has explained well, and after listening to Mu Guangyun describe the wonders of this magic circle in detail, Wu Song is also full of curiosity about the magic circle itself, he immediately contacted the pliers, and ordered the pliers to only kill people and grab silver ice energy crystals when they are sabotage, and not to destroy the magic circle itself, and at the same time, Wu Song rushed to the location of another magic circle.

These magic circles that transmit spiritual energy are all built in the more secret areas of the Black Shadow Mountain, but with the help of auxiliary devices, Wu Song clearly pulled out these magic circles one by one, this guy is in line with the principle of surrendering if he can, and killing him directly if he can't surrender, and when he destroys all the magic circles, he has signed a master-servant contract with the three guards, and the others have all been killed by Wu Song.