After reading the history of those deer-type creatures back and forth three times, Liu Zong also understood why those deer became like this, they had no concept of life and death at all, and naturally they didn't care about the changes in their bodies.

This is a stimulus for Liu Zong, he didn't think about it that way before, but now that he thinks about it, it's really like this, the direction is already there, and Liu Zong also thinks that this matter has a lot of success, so let's try it, anyway, if it fails, change it back.

With this in mind, Liu Zong began to make some fine-tuning of Canglong Fortress, and in this fine-tuning, Liu Zong found that the concept of adjustment finally became very similar to the third and fourth moves of the Seven Kills in the Underworld.

These two moves are the same path to the limit and then give birth to the opposite power, and Liu Zong wants to make the Canglong Fortress reincarnate from the dead, even if it produces a little vitality, then let the Canglong Fortress transform from quantitative change to qualitative change on the road of the undead.

If it was before, Liu Zong didn't have such an opportunity at all, and even if he thought of it, he didn't dare to do it, on the one hand, he didn't have the right Yin attribute or undead attribute to import.

On the other hand, he is such a Canglong Fortress, what if there is too much Yin attribute or undead attribute energy channeled in.

Now these two problems are not a problem, at this time Liu Zong is located in the underworld, although I am not sure where he is now, but it is certain that there is definitely a lot of energy in the Yin attribute and the undead attribute here.

On the other hand, there is a miniature world inside Liuzong's Canglong Fortress, if too much energy is introduced, just transfer too much energy here, you must know that the Yin attribute energy required by the Dragon Graveyard is quite a lot, and the energy of Liuzong Canglong Fortress is still far from enough.

With a direction and an opportunity, Liu Zong naturally took action, and he directly sank the Canglong Fortress into the underworld, let go of Canglong's mouth, and let Canglong gulp the water of the underworld.

Every time he swallowed, Liu Zong would use the Seven Kills of the Underworld at the tip of the nose of the Canglong Fortress, because the Canglong was already quite large now, Liu Zong's shot in this position was no different from shooting on the flat ground, plus Liu Zong couldn't use all the moves in one go, so he basically didn't move his lower body, and only used the moves on the spear to guide the Styx River into the inside of the Canglong Fortress.

Even so, with the size of the Canglong Fortress, a large amount of Styx water will be spit into every swallow, and this Styx water will have a certain amount of damage to the spirit, but it is a good energy source for someone like Liu Zong who can control it.

Each of Liu Zong's tricks is the first transformation of the Styx water, and then the Styx water will enter the stomach of the dragon for the second transformation and extraction, and a large number of materials that cannot be transformed are left in the stomach and become yin attribute materials, and those that can be converted into energy will be sent to the energy distribution room to receive the second transformation.

The rest of the water is spit out and returned to the River Styx.

The energy that is pumped into the energy distribution room will be eroded by the divine blood, marked with the seal of the Canglong Fortress, and then forcibly injected into all corners of the Canglong's body.

It's just that this time the amount of injection is larger, and the speed of injection is faster.

After a while, all the corners of the Canglong Fortress were already filled with Yin attribute energy, and at the same time, Canglong's body was slowly transforming, and the technology used was the same technology that Liu Zong used to metalize Canglong bones, but this time, in addition to metallization, Yin attribute was also injected into it.

All of this was handled carefully by Liu Zong, whenever there were too many or too few Yin attributes, they were fine-tuned by Liu Zong, but no matter how they were adjusted, the speed at which Canglong Fortress was swallowing the water of the Styx River did not weaken at all.

Of course, what Liu Zong needs is the energy of the yin attribute and the undead attribute in the water of the Styx, and the part of the water is spit out, and because of this, this section of the Styx water quickly became an ordinary river, and Liu Zong had to control the Canglong Fortress to go downstream, swimming and swallowing at the same time.

This kind of action has lasted for nearly a year, and during this year, Liu Zong has hardly rested, and uses the Seven Kills of the Underworld at the tip of the nose of the Canglong Fortress every day.

At the beginning, Liu Zong practiced his moves almost non-stop, but then he also felt a little unbearable, and finally it became an hour, one move at a time, and there was a temporary increase in the situation, and in the rest of the time, Liu Zong himself would stand in this position to make minor adjustments to the Canglong Fortress.

As for eating and resting, Liu Zong can only stand here, but fortunately, Liu Zong has a large number of followers, and there is a full set of services and everything, and even the food is ready-made, so it will not make Liu Zong hungry or sleepy.

After a long time, Liu Zong was also accustomed to this kind of life, and his understanding of the Seven Killings of the Underworld was obviously deeper.

The most important thing is that Liu Zong comprehended one of the third and fourth moves in the process.

This style is called [Dunlong Stake], this move is a move to forcibly move the dragon's movement speed, and this move will be studied, entirely because Liu Zong has been controlling the Canglong Fortress to drink water in the River Styx during this time.

The effect of this move is naturally the same as [Yin-Yang Mirror] and [Liangyi Ruler], and the front is a move that belongs to the [Eternal Life Valley], and the strengthened is a retreat word, under this move, Liu Zong's speed can be increased to the limit when he sits down and Xianglong, of course, the speed limit is the limit of the attack, and the enemy doesn't want to block this blow, and don't want to escape.

And the [Dunlong Pile] on the side of [Dead Soul Abyss] is just the opposite, talking about a pile word, Xianglong completely stops still, and the whole is a wooden stake target, but Xianglong does not move, and the enemy does not move, as long as it enters the attack range of [Dunlong Stake], it will be trapped directly, without a certain ability, it will not be able to escape at all, it can be said to be a good control skill.

And the magic corresponding to this move is quicksand, whether in terms of controlling the enemy, or in terms of lethality, the magic of quicksand has a good power, and it is also very compatible with the [Dragon Pile].

With such progress, Liu Zong was even more confident, and he worked harder to deal with everything in front of him, but until the Canglong Fortress was completely metal activated, Liu Zong did not study new moves.

On the contrary, the final Canglong Fortress made Liu Zong feel quite satisfied.

A full year later, when the Dragon Fortress flew out of the River Styx, the entire body surface of the Dragon Fortress had turned the color of rusty silver, and the size of the Dragon Fortress had not changed, but everyone could feel it, and the entire Dragon Fortress seemed to come to life, full of life and vitality.