At night, in Mu Xiyun's room.

Clusters of strange black gas filled Mu Xiyun's hands, and Mu Xiyun, who had been lucky for an afternoon, slowly opened his eyes.

After Dan Ge got the medicinal materials, Mu Xiyun returned to the mansion and began to cultivate, in order to seal the spiritual veins that were about to begin.

If you want to seal the spiritual vein, ordinary methods can't work, but you can use the Nine Needles of Hell Luo.

The Nine Needles of Hell Luo is a technique derived from the black hand of Hell Luo, which was created by the medical saint Feng Xiaozi.

And the casting of the Nine Needles of Prison Luo consumes extremely spiritual power and spiritual power, which is quite difficult to use for Mu Xiyun, who currently only has the Five Realms of Soul, but now he can't control so much, he must block the spiritual vein first, otherwise it is very likely to cause a riot of the dark spiritual vein again when he awakens the spiritual vein.

Suddenly, Mu Xiyun's eyes lit up, and he immediately walked to a cabinet next to him, and then took out a row of thin silver needles from the bottom of the cabinet.

"Although the material of the silver needle is a little worse, it is completely enough to withstand my current spiritual power," Mu Xiyun thought in his heart.

Immediately, the locked door was tightened again, and he returned to the bed, undressed and unrobed, and soon, Mu Xiyun sat up on the bed naked.

Mu Xiyun used his black hand again, and a strange black gas emanated from his hand, making the surrounding atmosphere suddenly become a little gloomy.

Mu Xiyun's eyes were closed, concentrating his mind, introverting his spiritual power into his body, looking for a place where his spiritual power was condensed.

Then, the surrounding strange black qi approached the silver needle and attached itself to the surface of the silver needle.

Seeing this, Mu Xiyun slammed the silver needle in his hand into the slightly deviated spiritual acupoint on his left chest and atrium, reciting the mantra silently in his mouth, and his spiritual power was released steadily, guiding the strange black qi around him, slowly flowing to the silver needle along Mu Xiyun's arm, entering Mu Xiyun's body, condensing at the mouth of the heart.

It is easy to see that the aura on the Spirit Gathering Acupoint has become much slower.

Subsequently, they successively used the same method to inject the strange black qi into the multiple spiritual power condensation places around the body.

A quarter of an hour later, dense beads of sweat had oozed from Mu Xiyun's forehead, his smooth body looked a little greasy, his face had become much paler, and his whole body was filled with an extremely weak feeling.

At this time, forty-six silver needles had been inserted into his body, and there were still three silver needles left in his hand, which were also the most important ones.

Now you only need to cast the first three needles of the Nine Needles of Hell Luo, and insert the remaining three silver needles into the last three acupuncture points to seal the spiritual veins.

The first and second needles, although Mu Xiyun was very difficult to perform, were still within the acceptable range, and they successfully pierced into the Lock Spirit Acupoint and the Dynamic Qi Acupoint.

Mu Xiyun looked at his hand, his face was slightly gloomy, and he found that there was no black qi entanglement on it.

At this time, Mu Xiyun's spiritual power had been exhausted, but the remaining spiritual power had not been exhausted.

Mu Xiyun couldn't help but be a little shocked in his heart, this was not in line with his expectations, according to his previous guess, even his current cultivation in the second realm of the opening pulse was enough to seal the spiritual vein.

But in fact, it was far beyond the expected consumption of spiritual power, and it was impossible to condense the third needle after only casting two needles of the Prison Compass Method, which made De Mu Xiyun sense that this spiritual vein was a little weird.

Mu Xiyun in his previous life, although he did not have a dark spiritual vein, he had helped the genius children of several big families awaken the dark spiritual vein, and he was also more familiar with it.

But for the seal just now, Mu Xiyun was really a little puzzled, and after a while, a thought suddenly sounded in his mind: "Could it be that my spiritual vein has mutated? Or is this not a simple dark spiritual vein?"

Mu Xiyun shook his head slightly, no longer thinking nonsense, the most important thing at the moment is to seal the spiritual vein.

Mu Xiyun's heart moved slightly, he changed his strategy, and suddenly began to recite the mantra silently in his heart, and the spiritual power of the five realms of the soul was released again.

After a long while, Mu Xiyun's brows were locked, and the corners of his mouth twitched from time to time, as if he was struggling to endure the pain, but he didn't say a word, his teeth clenched, and he continued to persevere.

A quarter of an hour passed, but this quarter of an hour fell on Mu Xiyun as hard as waiting for months.

Finally, he raised his hand tremblingly, and the silver needle in his hand was mixed with a strange black qi, looming.

This was the Prison Luo Black Qi that Mu Xiyun forcibly converted with his spiritual power, and then, he inserted the last silver needle into the Heavenly Spirit Acupoint above his head.

Suddenly, all the black qi around him turned into nothingness in the blink of an eye, and the spiritual power also dissipated without a trace, as if nothing had happened, only Mu Xiyun, whose whole body was covered with silver needles, proved that something seemed to have happened here.

"If it weren't for the fact that my cultivation was too low, I wouldn't have been so embarrassed. Xiyun wiped the beads of sweat on his forehead and sighed a little weakly.

Mu Xiyun was about to take off all the silver needles on his body, when suddenly, a violent feeling of dizziness surged into his mind, and he fainted on the bed in an instant. Obviously, this is the consequence of a serious overdraft of mental power.

"Squeak, squeak..."Outside the window, it was still dark, and from time to time you could hear the chirping of small insects coming from outside the door.

At this time, Mu Xiyun's consciousness had already entered a deep sleep, and he couldn't hear or feel anything.