In fact, Xiao Xuan didn't know at the moment, what he was going through at the moment was a catastrophe to deal with all the monks, this catastrophe was not from the outside world, but was born from the heart, and it was determined by peace, so it was called the heart tribulation!

Countless monks with amazing talents and rapid progress in their early years led to the later stage of being obscure to everyone, and finally disappeared into the vast sea of monks and were no longer inconspicuous. The mental tribulation is formless and substantial, but it can cut off the path of the monk's path! This calamity appears at different stages depending on the degree of mental toughness of the monk. There are those who are weak in heart and do not want to forge ahead, the Jindan Realm will come, and there will also be different levels of Yuanying, Huashen, Dongtian, and Huanyu, which vary from person to person.

Xiao Xuan established his mind this time, but he had already broken this heart tribulation, as long as this thought was not broken, he would not be bothered by the heart tribulation. Tuniu tribe, the desert plain. The sky is full of wind and sand, the sun is shining, the air is dry and there is no moisture at all, and the ground soil layer has been eroded for a long time, and now it has turned into yellow sand everywhere. The sun shines on the ground, drying the sand and heating up rapidly, making it extremely hot in the wilderness.

As for the night, when the sun sets, the temperature of the sand drops suddenly, and it is as cold as ice, and the temperature difference between day and night is very large. In addition, it is extremely barren, and the wind does not cover the sky and the sun all year round, resulting in a barren place. But it is in this barren land that some special brute beasts live, such as sand ants, all of which are the size of an adult's arm, and their bodies are covered in jet-black carapaces.

This brute beast survives by devouring grains of sand, absorbing the iron in it to evolve, making its carapace as strong as iron, making it an excellent material for making weapons. As for the pair of chewing teeth on the mouth, it is extremely sharp and barb, and a bite can easily tear apart the monk's flesh and remove a large piece of flesh and blood.

There are also sand scorpions, which are of different sizes, the small ones are about the size of a foot, but the large ones are like calves, with long tails, and are highly poisonous, among which the toxins have a very strong lethality for the monks, and they are invisible killing weapons, and they are sold for a lot of money after they are successful. In addition, other special brute beasts such as sand snakes and sand spiders have a special physique, and they almost do not need to take water from the outside world in their lives, otherwise they will not be able to survive in this harsh environment.

The desert plain is located in the territory of the Tuniu tribe near the southwest, there are 300 million miles, the real vastness, like the sea of sand, starting from the periphery, the more you march to it, the more harsh the environment, it is rumored that there are more powerful sand beasts in the depths of the sand sea, even if the peak of the Mahayana realm enters it, it will not be pleased. As one of the hundred clans in the fairy world, the Tuniu clan naturally has countless strong people, and in the early years, they also suspected that the strange appearance of this sand sea was strange, and there were treasures in it, so they sent the strong people in the clan to explore.

Although it is not known what the specific outcome will be, the matter is finally closed. Over the years, the sand sea has been slowly expanding, but in the eyes of the Tuniu monks, it is just a desert place, and there is no more treasure opportunity.

But even so, the existence of sand ants, sand scorpions and other brute beasts here still brings a bit of life to this sea of sand. Starting from the edge of the sand sea, there are vaguely some small cities in the sand, they are not built by the Tuniu clan, but the major merchants in order to purchase various brute beast materials nearby, the safety factor is naturally greatly reduced, and every few years will be hit by the sand sea brute beasts, and the casualties are heavy and the blood flows into the sea. But this did not deter the enthusiasm of the Tuniu monks, and the high profits were enough to make them take risks until they finally died in the sea of sand.

Beisha City is a small city on the edge of the Sand Sea, although it is not big, but as the first city on the edge of the Sand Sea, the monks who enter or leave will choose to stay here for a while, rest and then leave, coupled with the entry of major merchants, this deserted small city is extremely prosperous, and the number of mobile monks has reached an incalculable level.

Right now, outside the south gate of the city, there is already a long queue lined up, and they are paying spirit stones one by one to enter the city. Since this city was built by merchants, if you want to enter it, you naturally need to pay spirit stones, but fortunately, the price is not high, and no one has made trouble because of this little money for many years.

"Brother Chenxiao, this is Beisha City. A woman of the Tuniu tribe chuckled and spoke, this woman looked youthful, with a slender and beautiful little horn on her forehead, almost transparent, not only did not look weird, but added a bit of liveliness and loveliness. A Tuniu clan monk beside him nodded slowly when he heard this, looking at the small city in front of him, the strange color in his eyes flashed, and no one noticed it. Although his appearance is unfamiliar and his shape changes, those dark eyes and the calm meaning in them are enough to show his identity.

After deciding to come to the secret realm left by the Elf Clan's power that day, Xiao Xuan had already begun to prepare, and in order to avoid trouble, he learned about a special elixir, the Transfiguration Pill, through Shi Ling.

As the name suggests, after swallowing, it can transform into the race of the mind, and as long as it does not release the medicine on its own during the period, it can last up to a year. After more than ten days, Xiao Xuan was in a hurry to collect the materials of the Illusion Pill, but this pill was extremely rare, and one of the materials was extremely rare, and he ran several cities in a row but did not find it.

When he was about to give up, he happened to meet a group of monks who wanted to go to the desert (sand sea), and coincidentally obtained the last taste of ingredients from them. Xiao Xuan was overjoyed to complete the refining in secret, so he walked forward with this team, and on the way, he also heard a lot of information about the sand sea without a trace, hoping to help him in the future, although it took two more days, but in Xiao Xuan's opinion, it was extremely cost-effective, at least for now, he already had a preliminary understanding of this desert plain.

"Hmph, as a monk of my Tuniu clan, it is ridiculous that I don't know the desert plain. Not far from the two of them, a sturdy young Tuniu clan monk spoke in a low voice, looking at Xiao Xuan defiantly, his dissatisfaction was not concealed at all, from his occasional gaze on Xiao Xuan and the Tuniu Clan girl, he could easily judge the thoughts in this person's heart.

"Blood Tiger, Brother Xiao Xuan is a refiner, his cultivation is not comparable to you and me, it is normal that you have not been to the Desert Plain, how can you speak like this!" The girl of the Tuniu Clan glared angrily at this playmate who had grown up together, and she didn't know why he had been embarrassed with Brother Chenxiao for the past two days. The blood tiger's smug and sneering face collapsed instantly, and the girl opened her mouth to speak for Xiao Xuan, which made his heart feel even more gloomy, and he sneered and was about to speak, but at this moment, there was a hoarse but rather majestic shout.

"Okay, now that you've arrived in Beisha City, you two are not afraid of being laughed at by other 'beast hunters', so you don't have to say a word. "The person who came was a monk of the Tuniu tribe in his fifties, with a slightly dark complexion and a slight chapped complexion.

"Yes, Daddy. Lisa pursed her lips, twisted her waist and walked to Xiao Xuan's side without speaking. As for the Blood Tiger, after respectfully calling out to the master, he walked directly to the back of the team, and his face was full of the meaning that no one should approach.

"Hehe, don't take it to heart Chenxiao Daoyou, my disciple is just a little ...... Hehe, in fact, he has a good heart. "The old man of the Earth Cow Clan, codenamed Earth Scorpion, his real name is unknown, but he is the leader of this team that hunts Sand Sea Barbarian Beasts, and his cultivation is at the middle level of the Cave Heaven, and he is not too big and not too big a master, and he has led more than 20 clansmen to make a living by taking risks.

Xiao Xuan smiled and shook his head, with his current cultivation state of mind, he naturally would not be serious with a jealous little guy, besides, he was about to leave here, this sea of sand, he needed to enter alone.

Seeing this, the ground scorpion smiled, and glanced at Xiao Xuan deeply without a trace, the young clansman in front of him did not show any abnormality, calm and quiet, without the arrogance and frizziness of the young clansmen now, but it was his calmness that made him look down and always couldn't help but secretly feel a little awe in his heart.

Since the birth of the ground scorpion, I don't know how much bloody rain it has experienced, this life is crawling out of the pile of dead people, although the cultivation is not high, but the cultivated pair of eyes are extremely vicious. Although the ground scorpion was surprised by the inexplicable awe of his own family, he finally decided to be careful not to make enemies with this young clansman. That's why he sold the materials of the Illusion Pill at an extremely fair price, and he was also quite affectionate to Xiao Xuan along the way, and they became familiar with each other.

Standing outside the city gate, Xiao Xuan's gaze swept lightly around him, and he nodded slightly in his heart. This earth cow clan is worthy of being one of the hundred tribes in the spirit world, there are really a lot of strong people, only among the "beast hunters" attracted by this sea of sand, there are many strong cultivators, among which the realm of gods is the main, followed by the yuan baby, and the gods are the least.

As for the existence of the Cave Heaven Realm, there has never been a single person here. This is also normal, although the materials on the brute beasts in the sand sea are expensive, but it is only for the monks below the cave sky, for the Mahayana monks, let them obtain spirit stones by hunting the brute beasts, it is obviously a matter of great loss of identity, unless there is a reason, otherwise it is very rare for a Huanyu monk to enter the sand sea.

Following the people into the city gate, Xiao Xuan stopped, hugged his fist to the old man of the Earth Niu Clan, and said: "Fellow Scorpion Daoist, you and I will separate here, Chenxiao will buy some materials in the city, and I will not go with you, you and I will have a period later." ”

The ground scorpion nodded and said with a smile: "That is the case, the old man will not stay longer, but my earth cow team will always be friends of Chen Xiao Xuan's friends, we will often haunt Beisha City, if you need help in the future, you can come here directly to find us." The man spoke, but his voice was earnest.