After listening to the words of the God Doll, He Wuhen quickly checked his personal attributes.

His own strength level has not changed, and he is still in the mid-stage Great Perfection of the True God.

However, in the taskbar, a brand new task appeared.

Demon-killing God (Endless): In the first stage, kill 10 demons or gods with the same level as your own strength. After completing 3/10, you can get rewards after completing the task.

In the next stage, kill 100 demons or gods with the same level as your own strength, and you will receive a reward after completing the task.

Seeing this, He Wuhen immediately understood.

The task of killing demons and destroying gods is to let him kill demons and gods. The more he kills, the better, and the more he kills, the more rewards he rewards!

As for the magical smelting technique, he still needs to study it again.

At this time, the God Doll took the initiative to remind: "Master, you cannot directly refine the three god emperor-level demon gods you killed just now. After all, they are alien races and have the characteristics and talents of demons and gods. If you forcefully refine them, although they can also enhance the power of the soul, it will affect the foundation of the divine path."

"In a short period of time, you may not see any disadvantages, but if this continues, you will be in danger in the future. Therefore, the doll recommends that you use the smelting magic technique to melt their souls into the essence of the soul, and then improve your soul, or upgrade the artifact equipment."

"Of course, those soul essences are limited to upgrading the Blood Drinking Sword, Xuanyuan Sword and Tongtian Tower."

He Wuhen vaguely understood something after hearing this, but in order to make sure, he still asked: "Why are you limited to upgrading these three magical tools?"

The God Doll smiled and said, "Because your three artifacts are very special, they can be upgraded infinitely. After all, they were once the top artifacts."

"Ordinary artifacts are basically impossible to upgrade. Unless they are recast with refining materials, it is impossible to upgrade them with the essence of the soul."

The doll's words confirmed He Wuhen's guess. He immediately showed a playful smile and nodded, "Sure enough, it seems that I'm not wrong."

He had considered this issue a long time ago. The Blood-Drinking Knife can be upgraded all the time, so that's different.

The two treasures, Xuanyuan Sword and Tongtian Tower, are extremely important to him, but they have never been able to upgrade.

Xuanyuan Sword and Tongtian Tower are top-grade and middle-grade divine weapons. In the following worlds of heaven, they are still top-notch divine weapons.

After arriving at the Haotian World, these two magical artifacts became a bit ordinary and their power was not that significant.

But He Wuhen knew that these two treasures were special and must have greater potential and secrets, so he did not give up anyway.

Now he finally understood and knew how to upgrade Xuanyuan Sword and Tongtian Tower.

So He Wuhen asked again.

"Doll, how much soul essence will I need to consume if I upgrade Xuanyuan Sword and Tongtian Tower?"

The God Doll replied in detail: "The Xuanyuan Sword is a top-grade magic weapon. It cannot be upgraded yet. You can only wait until you ascend to the upper realm before you can reach the top-grade magic weapon."

"Tongtian Tower is a medium-grade artifact. You can consume 100 soul essences and upgrade it to a high-grade artifact."

He Wuhen nodded and said, "Yes, I understand."

He took this matter in his heart, didn't ask any more questions, and turned around and flew to the yellow sand desert in the distance.

In the sky twenty-hundred thousand miles away from him, Mu Zichen was still fighting with the Western lord.

Originally, Mu Zichen was fighting alone with the Western lord, but at the cost of being injured, she tried every means to kill the Western lord's body.

But the Western lord split into two clones, attacking her from the front and back, causing her to fall into a disadvantage and adding many new injuries to her body.

Later, Mu Zichen tried his best to use his trump card skills, and finally shattered the body of the Western lord again.

Unfortunately, the Western lord continued to split and became four clones again.

Now Mu Zichen had no choice but to besieged by the four clones and fell into a very dangerous situation.

Her body was covered with scars and covered with blood, and her divine power was consumed greatly. She was suppressed and beaten by the four lord clones and could not escape.

Fortunately, He Wuhen arrived in time and directly used the magic of time-stagnation, and simply killed the Western lord in an instant.

Even the soul of the Western lord was killed into pieces by him and put into the parcel space.

The battle ended and the sky returned to peace.

He Wuhen quickly exerted a huge amount of divine power and sent it to Mu Zichen's body to help her suppress her injuries.

Mu Zichen used his skills to heal his wounds and quickly suppressed his injuries.

Then, He Wuhen let her enter the illusion of time in the Tower of Tongtian healing.

He continued to rush to search for hidden hiding places in the yellow sand desert.

While healing his wounds in the illusion of time, Mu Zichen sent a voice to ask He Wuhen: "Wuhen, why is the demon god lord so strange just now?"

"I killed its body, but it can constantly create more clones and cannot be killed!"

"That's because the demons inherited the talents of the demons and could be infinitely divided, which is indeed very difficult to deal with." He Wuhen explained a few simple words, and Mu Zichen understood the reason.

Not long after, He Wuhen found a hiding place in the desert and hid in it.

He turned the Tower of Heaven into an inconspicuous grain of yellow sand and sank it in the deepest part of the desert.

Then he also entered the Illusion of Time and took out the soul fragments of the four demon lords.

Of course, he did not want to refine soul fragments to enhance his soul, nor did he use the magical technique to train soul fragments into the essence of the soul.

He wanted to seize the soul memories of the four demon lords, so that he could better understand the situation of Wuye Kong and also find out the whereabouts of the Wheel of Destiny.

He Wuhen took out a pile of soul fragments, sat cross-legged in the twisted space and time, and began to refine.

Time passes, and before you know it, eight years have passed.

It took him half a year to seize all the soul memories of the four demon lords.

Eight years have passed in the illusion of time, but only one month has passed in the outside world.

He Wuhen has the vast memories of the Demon Lords, and he has a better understanding of the situation of Wu Ye Zhikong.

Most importantly, he sifted out a lot of useful information from those memories and found information related to the Wheel of Destiny.

He Wuhen finished his practice, left the illusion of time, returned to the sky of Wuye, and rushed to the southwest.

Not long after, Mu Zichen also flew out of the Tongtian Tower and flew side by side with him.

After half a year of retreat and healing, Mu Zichen's injuries have basically recovered.

Seeing that He Wuhen did not search for the yellow sand desert along the way, she asked in confusion: "Wuhen, why don't you continue searching? Did you find any clues?"

"Well." He Wuhen nodded and said with a burning look: "Ten thousand years ago, the Ninth Princess took her mentor and guards to Wuye Sky to adventure. The Southern Lord had seen her."

"According to the memory of the Southern Lords, the Ninth Princess and the others stayed in the southwest for a long time, as if they were looking for something. Later, the Ninth Princess had a fight with a lord in the southwest, and the Wheel of Destiny was lost in that battle."

Mu Zichen immediately understood his thoughts and nodded in agreement: "Okay, then we will go to the southwest to find the Demon Lord and start investigating it first."

Next, He Wuhen and Mu Zichen had clear goals and went all out to rush.

However, they acted in a low-key manner and just wanted to arrive in the southwest as soon as possible to find the demon lord, but they couldn't do it as they wished.

There are endless demons in the sky of Wuye. They can always use their natural magical powers to discover the traces of He Wuhen and Mu Zichen, and then rush over to death at all costs.

While rushing, the two had to fight several times a day and were often besieged by a large group of demons.

Most of the demons are at the level of war generals, and a few are at the level of god kings.

As for the Demon Lord of the Divine Emperor level, He Wuhen and Mu Zichen only met one after two months.

Before we knew it, three years passed, and the two finally arrived at the southwest of the night sky.

In these three years, He Wuhen killed more than 50,000 demon gods, obtained more than 2 billion experience points, and took the time to strengthen the soul.

The number of demon god lords he killed also reached eight.

There is no doubt that he accumulated eleven demon god lords, completed the first stage of the demon-killing and destruction mission, and received the mysterious reward given by the system.

Ten soul essences, plus ten top-grade healing pills.

When He Wuhen saw the reward given by the system, he felt a little excited and happy.

"Haha, I have only killed ten demon god lords, and the system has actually rewarded ten soul essences and ten healing pills."

"If this continues, it will probably not take long before I can save up 100 soul essences and upgrade the Tower of Heaven to the top-grade artifact."

The God Doll also smiled and encouraged him: "Master, you have only completed the first stage of the mission at present, so the reward is not too generous."

"As long as you continue to work hard and continue to complete the next stage of tasks, the rewards you will receive will become more and more abundant!"

He Wuhen nodded and responded, and did not say anything more to the god doll.

He and Mu Zichen slowed down their flight speed and began to search carefully around.

The two of them flew in mid-air, with endless seas under their feet, and endless stars shining on the sea surface, rippling with the waves.

Through the memories of the Southern Lord, He Wuhen learned that the demon lord who fought with the Ninth Princess was entrenched in this sea area.

It is said that the demon god lord named himself Taixu, and is one of the old demons left over from the ancient times and has survived for countless years.

Its strength is very terrifying, far exceeding the four major lords, but it hides in the sea very low-key and does not show up easily.

The four lords dared not provoke the lord Taixu, and had only heard some legends about it.

According to legend, Lord Taixu has a pure bloodline of gods and demons, inherits most of the talents of the gods, and also has a magical treasure.
Chapter completed!