Li Sibai understood a little at this time, he originally had a small part of true qi and a lot of fighting qi in his body, and he was able to quickly break through the second level of the Fengchu Realm at a young age, which may be related to the small amount of true qi that he already had in his body. And the fighting qi in his body restricted him from continuing to cultivate Xuantian Gong to refine his true qi, so although he broke through and quickly broke through the second level of the Fengchu Realm, he really couldn't break through at the third level of the Fengchu Realm no matter what. With the help of Cai Yao, he was able to successfully break through the third and fourth levels of the Feng Chu Realm, and with the help of the old tree spirit, he could even break through the fifth level of the Feng Chu Realm through the increase in the cultivation of the fighting spirit, although Li Sibai still had some confusion here, but I believe that it will become clearer and clearer in the future.

At this time, the old tree spirit didn't know where to take out a wooden box, the wooden box was rectangular, the slender box looked very rough, there was no decoration, not to mention, some of it was blackened, it looked some years old. Despite this, it is a very good piece of wood.

The old tree spirit slowly sent the box to Li Sibai's face,

"Take it, young man, it's your thing. ”

"My things?" Li Sibai was puzzled again, he held the wooden box with both hands, and he felt heavy, almost unable to hold it,

Li Sibai hurriedly put the box on the ground, opened the lid, and a sword with a black body came into his eyes, this sword was more than three feet long, and the whole body was jet black, and there was indeed no luster, and it looked very different from the fairy sword they used.

Li Sibai tried to pick it up with one hand, tried it to make sure it didn't move, Li Sibai secretly exercised the internal force of Xuantian Gong again, and then picked it up with more effort, and couldn't help but be secretly surprised, the weight of this black sword is heavy enough, although I don't know how much it weighs, but if it was placed a few days ago before Li Sibai was upgraded to the fifth level of the Fengchu Realm, he would definitely not be able to hold this sword.

"It's ?..."

The old tree spirit squeezed his eyes, and said excitedly: "This is the Xuantian Sword, he has been here with me for a long time, I once thought that it would never appear in this world again, until I met you today," said the old tree spirit with some feelings, and his face leaked an incredible expression, "That person is too powerful, this can also be calculated, I really admire him for the five-body !!"

"Xuantian Sword ?!!!!" Li Sibai's mouth opened wide in surprise, and he said loudly, unable to believe what he heard.

The old tree spirit paused again and said: "Yes, it is the Xuantian Sword, as a disciple of the Xuantian Sword Sect, although you are only an outer disciple, you should have heard that this sword is left to you by him, and only you can drive him in this world, come, inject your true qi into this sword and try it." ”

Li Sibai listened to the words of the old tree spirit, and without hesitation, he injected the Xuantian Gong True Qi in his body into the black Xuantian Sword, but after a long time, this Xuantian Sword didn't seem to react.

The old tree spirit smiled and pointed:

"Well, you pay attention, and when you inject it, bring some of your innate true qi. ”

Li Sibai's face turned red, and he promised to act immediately,

As Li Sibai's innate true qi slightly entered this Xuantian Sword, the Xuantian Sword, which was originally as black as carbon, actually began to slowly emit some golden light.

"Come, put some blood on this sword. The old dryant said again.

Li Sibai stretched out his left arm, and with a light stroke on the Xuantian Sword, a bloody mouth opened, and the blood stayed along the Xuantian Sword, flowing into the sword body, the golden light dimmed, and the sword body was slightly red at the moment, and there were faint traces of fine lines on the sword body, which seemed to have some meaning, but in this darkness, it was really impossible to see clearly.

As Li Sibai's blood flowed more and more, almost the entire sword body had been bathed in his blood, and the golden light rose again, and there was a direct irradiation on Li Sibai's wound, and in just an instant, Li Sibai's wound had already healed.

At this time, the Xuantian Sword had completely absorbed Li Sibai's blood, and the golden light reappeared, while the red color was completely gone, and those fine lines were gone. The sword seemed to have a spirituality, and it kept shaking in Li Sibai's hand, as if it wanted to speak, and it seemed to be happy to find a new master, it hadn't been so happy for many years.

"Very good, the Xuantian Sword has completed the contract with you, as long as you live, it will be completely loyal to you alone!!" The old tree spirit explained to Li Sibai seriously.

"Legend has it that this Xuantian Sword is made of a piece of dark iron, the caster is said to be our ancestor Yu Xuzi, what secrets on this sword need to be dug up by yourself, it has not been born for a long time, and even so long ago that everyone has forgotten it, but this is fine, so as not to cause unnecessary disputes before you fully grasp it. ”

"Don't look at him as usually inconspicuous, but you need to use your innate true qi to urge it, the stronger your true qi, the stronger he is, but you have to know that your innate true qi is limited, although the innate true qi consumed by urging it each time is very small, but if you can't refine the true qi of the level similar to your innate true qi, in the end you still can't fully play its role. ”

Li Sibai nodded: "I understand senior, thank you for giving me this divine sword, I will definitely exert its greatest power, use it to kill demons, and live up to your trust in me!"

The old tree spirit couldn't cry or laugh after hearing this, although he was a tree spirit, but he was not satisfied with some of the practices of the demon clan and the demon clan, and now in this situation, he was only entrusted by others, and what he could develop into in the end was not something he could control.

"That's it, you still need to experience these truths yourself... Besides, I am also entrusted by others, and you can guess the person who entrusted me, so you don't have to ask me again. ”

Li Sibai nodded thoughtfully, the old tree spirit had already made it very clear, and it would be a little silly for him to ask after him again. He knew very early on that the reason why the sect was called Xuantian Sword Sect was not just because of your Xuantian sword technique, but more importantly, this Xuantian Sword, this Xuantian Sword was built by the ancestor of the Xuantian Sword Sect, Yu Xuzi, and it can be said that the most important divine sword of the Xuantian Sword Sect was born, but since the ancestor Yu Xuzi turned into an immortal, the whereabouts of this sword are unknown, but he didn't expect that it was here in this old tree spirit, the person who entrusted the old tree spirit does not need to guess, it should be our Xuantian Sword Sect's ancestor Yu Xuzi, the more Li Sibai thought about it, the more excited he became, and his happiness was beyond words.