Xiahou Wu glanced at the death chain a meter away, and the left hand that grabbed the tail bone of the bone dragon did not stop, but continued to shake up and down, smashing the body of the bone dragon on the ground continuously.

Click......

The bones of the bone dragon made a continuous "click" cracking sound.

Xiahou Wu's lifeless chain one meter away suddenly turned and accelerated, instantly winding Xiahou Wu's body and restraining Xiahou Wu's figure, and the bone dragon also took advantage of this time to break free from Xiahou Wu's left hand.

"Haha...... Just a little trick will make you lose your vigilance, and after absorbing your flesh, maybe I can also reforge my body and leave this hellish place. The bone dragon laughed proudly, turned around, raised the bone claw and slapped Xiahou Wu's head fiercely.

"It's just a little trick. Xiahou Wu smiled coldly.

"Space Jump!"

Rumble!

The bone claw slashed through Xiahou Wu's afterimage and slapped on the ground, and Xiahou Wu had already appeared above the bone dragon's head at this time, and the thunder knife in his hand flashed an arc of electricity, mercilessly slashing at the bone dragon's head.

"Crack Slash!"

The head of the bone dragon was attacked by the Thunderfall Knife, and the bones were instantly entangled by lightning, and then burst open, turning into countless fragmented bone pieces and splashing around, and the two black flames in the eye sockets of the skull suddenly turned into two afterimages, fleeing into the distance.

"Soul Imprisonment!"

Xiahou Wu caught up with the two black flames in a flash, and instantly cast his soul imprisonment to envelop the black flames and bind them in place.

"Do you think you're very smart, and you feel a sense of accomplishment in being smart?" Xiahou Wu looked at the two black flames with a cold face, revealing a mockery.

"Big brother, spare your life, for the sake of your ancestral dragon bloodline, spare Xiaolong's life. From the black flames came the sound of the bone dragon begging for mercy.

"What I hate most is the people who cheat in front of me, and it's useless to beg for mercy. ”

"Soul burst!"

"Ah...... Spare your life...... Spare your life. The black flame was attacked by Xiahou Wu's soul, and it instantly became dim, and the bone dragon let out a terrible cry of pain and begged for mercy again.

"If you want to spare you, you can answer me a question, as long as I am satisfied, I will spare your life. Xiahou Wu said with a smile.

"If you ask, as long as I know, I won't hide it. ”

"Tell me where there are a lot of dragon marrow crystals. Xiahou Wu asked lightly.

The black soul fire of the bone dragon did not answer Xiahou Wu immediately, but was silent for nearly ten seconds before replying firmly: "I have no comment on this question, I told you, I will also be executed." ”

"Soul burst!"

"Ah...... Don't ...... I said, I said, you can find the dragon marrow crystal in the center of the burial dragon abyss, there is a formation, and the essence of the dragon bone is continuously gathered for a long time to form dragon marrow crystals. However, with your strength, it is absolutely impossible to get the Dragon Marrow Crystal, there are a large number of bone dragon powerhouses entrenched in the guard. ”

"Whether or not you can get the Dragon Marrow Crystal is not your concern. Xiahou Wu replied lightly.

"I've told you all the clues about the dragon marrow crystal, can you let me go?"

"I'm not satisfied with your answer, so let's hit the road. A sneer appeared at the corner of Xiahou Wu's mouth.

"Soul burst!"

"Ah...

... , you play me, despicable villain, you don't believe in your words. ”

"Soul burst!"

Xiahou Wu cast two soul attacks in a row, and the black soul fire finally couldn't withstand it and was completely extinguished, dissipating into the air.

After Xiahou Wu completely killed the bone dragon, he turned his head to look around, looking at the blur a hundred meters away, and he couldn't distinguish the direction to the center of the burial dragon abyss, and then he could only choose a random direction and move forward slowly.

A day later.

Whoop!Whoa!Whoa......

Xiahou Wu heard a few continuous dragon groans on the left side, Xiahou Wu hurriedly reined in his breath, and directly used the Earth Movement Technique to drill into the ground, quickly walking in the direction of the source of the sound.

A quarter of an hour later, Xiahou Wu could clearly feel the vibration of creatures walking on the ground.

Xiahou Wu stopped walking, slowly poked his head out of the ground, and observed the situation on the ground.

I saw that fifty meters in front of Xiahou Wu, a huge bone dragon was walking forward, the head of the bone dragon was blocked by the gray mist, and only half of the body and tail bone could be seen.

Xiahou Wu only glanced at the bone dragon in front of him, and then immediately escaped into the ground. The bone dragon in front of him immediately turned around, and the black soul fire in the bone dragon's skull jumped up and down, and the head swayed from side to side to observe the ground.

"Is it a delusion?"

After more than ten seconds, the bone dragon turned around and continued to walk forward, while Xiahou Wu followed the bone dragon underground.

Xiahou Wu followed the bone dragon for half an hour before the bone dragon stopped and stopped moving forward.

At this time, on the ground above Xiahou Wu's head, there was no longer a trace of gray mist, and a formation that occupied a circle of several hundred meters was clearly engraved on the ground, exuding a faint red light.

In the sky above the formation, there are golden diamond-like crystals suspended in the sky, each of which is the size of a fist, and this golden diamond is Xiahou Wu's extra task item, the Dragon Marrow Crystal.

Outside the formation, dozens of bone dragons were lying on the ground around the formation, seemingly guarding the formation.

Xiahou Wu slowly poked his head out of the ground, ready to observe the situation on the ground. Coincidentally, on the periphery of the formation in front of Xiahou Wu, there happened to be a bone dragon, and he saw Xiahou Wu's head coming out of the ground.

The bone dragon that saw Xiahou Wu's head was slightly stunned, and then let out a loud roar: "There are intruders." ”

"!" Xiahou Wu scolded secretly, and then directly cast a spatial jump and disappeared in place, and when he reappeared, he had already appeared above the formation, grabbed a dragon marrow crystal and put it away.

Then he disappeared from the sky again, appeared in front of another dragon marrow crystal, and collected one dragon marrow crystal again.

"Look for death. A golden-boned dragon let out an angry roar.

"Space Blockade!"

"Forbidden Sky!"

Xiahou Wu suddenly found that the space here was blocked, and he could no longer perform spatial jump teleportation, and his body was also subjected to a force of oppression, and he could no longer fly, and fell directly from the air to the ground formation.

As soon as Xiahou Wu's body fell into the formation, he felt a pulling force coming from the formation, as if it was about to pull the blood in his body and the bone marrow in his bones out of his body.

Whoosh!Whoosh!Whoosh......

Fireballs, Ice Arrows, Chains of Death, Meteorites...... , dozens of bone dragons instantly sent out various attacks, blasting towards Xiahou Wu in the formation.

"The end of the world is just around the corner!"

Xiahou Wu didn't think about it, and immediately cast a close hand at hand

Ya disappeared in place, and when he reappeared, he was already more than 200,000 miles away from the formation, and then he went directly into the ground, and once again exerted his close hand to the end of the world, and he was more than 200,000 miles away before he hid his own breath.

After concealing his own breath, Xiahou Wu directly took out the Qingyan Immortal Mansion and turned it into a stone shape, and then drilled into the Qingyan Immortal Mansion.

"Whew!" Xiahou Wu exhaled heavily in the Qingyan Immortal Mansion, feeling palpitations at the pulling force of blood and bone marrow when he fell into the formation just now.

If it weren't for the fact that Xiahou Wu not only had the teleportation secret technique of space jumping, but also possessed the secret skill of the Earth Element Law that shrank into inches, it is estimated that Xiahou Wu would be planted in the Burial Dragon Yuan this time.

As soon as Xiahou Wu entered the Qingyan Immortal Mansion, more than ten skull dragons appeared on the ground outside the Qingyan Immortal Mansion, spreading their divine sense to investigate the ground and underground, looking for Xiahou Wu's traces.

The Bone Dragon's divine sense swept over the stone turned into by the Qingyan Immortal Mansion many times, but it did not find any abnormality in this stone.

After the bone dragon did not find Xiahou Wu, he quickly left this place and went to other places to look for it.

Xiahou Wu took out two dragon marrow crystals in the Qingyan Immortal Mansion, held them in his hand and observed them for a while, feeling the rich energy in the dragon marrow crystals.

Xiahou Wu pondered for a while, then directly took out the Sky Breaking Sword and levitated it in front of him, and then asked, "Heaven Breaking, do you know the Dragon Marrow Crystal?"

"Master, there are two ways to form dragon marrow crystals, one is the Chaos Supreme level dragon clan, after the soul is extinguished, the bone marrow in the bones will form one or two dragon marrow crystals after a long period of changes. ”

"The other is to use the dragon bones of the strength of countless Immortal Venerables, use the formation to absorb a large amount of dragon marrow, and condense the dragon marrow crystal. Sword Spirit Heaven Breaker replied.

"What's the use of the Dragon Marrow Crystal?" Xiahou Wu asked, looking at the Sky Breaking Sword.

"The Dragon Marrow Crystal is one of the top treasures in the Chaos Universe to increase the strength of the physical body, as long as you integrate your body into the blood of the dragon clan, you can absorb the energy in the Dragon Marrow Crystal and fuse with the physical body, improving the strength of your physical body. And as long as you have enough dragon marrow crystals, it is possible to increase the strength of your physical body to level fifteen. Sword Spirit replied.

"How do you absorb it?" Xiahou Wu glanced at the two fist-sized dragon marrow crystals in his hand, and then looked at the Sky Breaking Sword and asked.

"Just like absorbing the Chaos Crystal and the Beast Pill, absorb the energy of the Dragon Marrow Crystal into the body, and then control the energy of the Dragon Marrow Crystal to merge with the physical body. ”

"I'll give it a try. Xiahou Wu nodded in response, and then put away the Sky Breaking Sword.

"It's really convenient to have an old monster here. Xiahou Wu thought secretly in his heart. If Xiahou Wu's idea is known to Sword Spirit, it is estimated that he will be angry again.

Xiahou Wu sat down directly with his knees crossed, holding a dragon marrow crystal in each hand, and began to absorb the energy of the dragon marrow crystal.

After the energy of the dragon marrow crystal was absorbed into Xiahou Wu's body, the ancestral dragon bloodline in Xiahou Wu's body instantly became active, and there was no need for Xiahou Wu to control the energy fusion of the dragon marrow crystal's body, it was absorbed by the primeval ancestral dragon bloodline itself.

The energy of the dragon marrow crystal is very huge, the two fist-sized dragon marrow crystals, Xiahou Wu absorbed it for four days, and the energy of the dragon marrow crystal is at least half left, and Xiahou Wu's physical strength at this time has been improved from the tenth level elementary to the tenth level middle.

Xiahou Wu increased the strength of his physical body, and did not stop absorbing the dragon marrow crystal, but continued to absorb it for five days before he completely absorbed the energy of the two golden dragon marrow crystals, and at this time, the dragon marrow crystal also changed from golden to plain and transparent.