An untold story is told from Ziling's mouth. And the beginning of the story begins with an ancient and long era.

Nine hundred years ago, the old king of the Western Regions suddenly stopped his conquest of the Central Plains, and then an immortal master helped him to become an immortal.

He is no longer satisfied with being only the king of the Western Regions, nor does he want to be like the old king of the Western Regions, but wants to step through the void, live forever, rule all things in the world, and replace heaven and earth - become a god.

He not only ordered people to go to various places in the Central Plains to kidnap Taoist monks to refine pills for him, but also rampant witchcraft in the country, making wizards second only to kings, and even listened to slander, drinking the blood of boys and girls every day, turning the entire Western Regions upside down and panicking.

Under his rule, the Western Regions became chaotic. Because of his forcible seizures over the years, he not only caused turmoil and war on the borders, but also divided the Western Regions into multiple factions, began to plunder each other's resources, and made the people live in misery. But he didn't care about all this, and only pursued the ethereal art of eternal life. It was precisely because of his madness that the entire Western Regions eventually fell apart and fell into endless wars, which also made him lose everything.

The king of the Western Regions died in a rebellion, and his wives and concubines fled in that rebellion, but most of them were killed by the rebels in the later flight, and the entire Western Regions was divided into more than a dozen kingdoms, large and small, including the kingdom of Tiya. And the wizard clan, which was once very prosperous, gradually declined with the death of the king of the Western Regions, and it didn't take long for it to disappear.

Some of the old tribes that survived and were loyal to the king of the Western Regions have also gone into hiding since then, and secretly formed a secret organization, Shatuo. With the goal of avenging the King of the Western Regions, they are on a mission to find the descendants of the King of the Western Regions in the Diaspora, just to help him one day unify the Western Regions and restore his former glory.

Due to the perennial use of pills by the King of the Western Regions, coupled with the influence of witchcraft, the blood in his body has undergone abnormal changes - if the blood flows outside the body, it is no different from ordinary people at the beginning, and it is red, but if the blood does not stop, the blood will change, and the color will gradually turn blue and purple, and exude a strange fragrance, and this bloodline will be passed down from generation to generation. This is also the reason why Sha Tuo still believed that he could find the descendants of the king of the Western Regions for hundreds of years.

Through continuous cultivation and inculcation of faith, Shatuo gradually grew and became a very powerful mysterious force in the Western Regions, and its members gradually infiltrated the countries of the Western Regions. On the one hand, they are secretly looking for the descendants of the king of the Western Regions, and on the other hand, they stir up the situation and provoke wars among the countries of the Western Regions in order to achieve their goal of avenging the king of the Western Regions. In the following few hundred years, Shatuo gradually took control of the power of the Tiya Kingdom, and annexed the weak kingdoms of the Western Regions, becoming the largest country in the Western Regions.

But as time passed, the ambitions of the Tia clan expanded, and power and faith began to split. In order to retain the power in their hands, the Tiya royal family no longer wanted to obey Shatuo's orders, and wanted to truly establish themselves as kings. So, while looking for the descendants of the King of the Western Regions, hoping to get rid of Shatuo before he could find him, they began to purge the members of Shatuo and uproot Shatuo. At this point, the Tiya royal family was completely separated from Shatuo, which opened the prelude to the century-old struggle between Tiya and Shatuo.

In the hundreds of years after the division of the Western Regions, another mysterious tribe also quietly appeared in the Western Regions. They claimed to be messengers sent from heaven, shouldering the mission of protecting the health of the people in the Western Regions, practicing medicine between countries, and gradually gaining the trust of the people. On the surface, they practice healing, but behind the scenes, they use these people to test medicine and practice poison. They are the wizards who have disappeared for a hundred years.

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Back then, after the death of the King of the Western Regions, the wizard clan quietly hid the bones of the King of the Western Regions, and believed that the magic of witchcraft could bring him back to life, and only by resurrecting the King of the Western Regions could their wizard clan regain the respect of the world and restore their former glory.

And the most crucial part of resurrecting the king of the Western Regions is to use the blood of the descendants of the king of the Western Regions as a sacrifice. The wizard clan, like Sha Tuo, is aware of the anomalies in the bloodline of the King of the Western Regions, so they are also secretly looking for the descendants of the King of the Western Regions.

The appearance of the wizard clan soon attracted the attention of Sha Tuo, and after years of tracking and investigation, Sha Tuo knew the purpose of the wizard clan. But Shatuo didn't trust the wizards, and even hated them. They believed that the king of the Western Regions was deceived by witchcraft back then, which led to the rupture of the Western Regions. So Sha Tuo began to massacre the wizard clan, at first the wizard clan could still use poison Gu and other means to fight against it, but Sha Tuo's power at that time was too huge, and over time the wizard clan was difficult to fight against it, and gradually the people withered, and after many years of hiding, they were finally forced to flee to the Central Plains.

At that time, the Central Plains was in turmoil, the world was divided, and the wizard clan successfully hid into the four countries of the Central Plains. Due to the heavy casualties of their clansmen, they decided to temporarily live in obscurity and multiply, and lived the life of ordinary people.

After the Great War of the Four Kingdoms, the sorcerers who integrated into the countries gradually wavered in their belief in resurrecting the king of the Western Regions, and some even had a strong affection for the Central Plains, regardless of the ban on intermarriage with the Central Plains, they did not want to stir up disputes anymore, and only wanted to live incognito with their families in peace. However, the elders of the wizard clan still have a deep obsession with resurrecting the king of the Western Regions, and after seeing the fertile land and abundant material resources of the Central Plains, they have ambitions - they want to follow Shatuo's example and control the political power of various countries, first, to facilitate the implementation of the plan of resurrecting the king of the Western Regions, and second, to use the forces of the Central Plains to go to the Western Regions to exterminate Shatuo.

As a result, the wizard clan was divided into two factions, one was the peace faction, they advocated peace, and did not want to participate in the disputes that had lasted for hundreds of years in the Western Regions, but only wanted to be idle and wild; The other faction is the radical faction, who hibernated in various countries, and after a long period of accumulation, gradually infiltrated the courts of the four countries, trying to stir up the Central Plains regime.

Due to the intermarriage between the pacifists and the Central Plains, not only did they violate the ban in the clan, but also confused the bloodline of the wizard clan, and the wizard clan began to hunt down these people with impure blood.

They imprisoned these clansmen, used them to test Gu, tested poison, fed Gu with human blood, produced poison with ten thousand poisons, quenched them with poisonous blood, and finally refined a kind of evil poison called "Seven Evils" a few decades ago. This poison is deadly to ordinary people, but when applied to a person of wizard blood, it will erode the mind, make them lose their minds, and eventually become mindless walking corpses.

These walking dead are not only aggressive to living creatures, but also have no sense of pain, they contain a lot of poison in their blood, if they are caught and bitten, they will be poisonous, although they will not kill immediately, but this poison is difficult to get rid of, and they can only wait for death in the end, so these walking dead are also called "poisonous people" by them.

However, due to the extremely complicated and cumbersome refining of the Seven Evils, not only did it take a long time to feed Gu with human blood, but it also required a variety of poisons, and some of the poisons did not exist in the Central Plains at all. Therefore, over the years, they have been pretending to be merchants in the Central Plains to infiltrate the Western Regions, looking for poisons to refine the Seven Evils, and at the same time, they have secretly pursued those descendants who have the blood of the wizard clan, and they want to make them into a poisonous army, and use them to spread the toxin, so as to control the entire Central Plains.