It is a huge cave, nearly eighty meters in length, width and height, in a semicircular shape. Dozens of large and small openings appeared on this semicircular stone wall. And in the middle of these dozens of cave entrances, there are countless pieces of gold essence stones that are at least the size of a human head.

Inside the cave, dozens of ironclad beasts entered these dozens of caves one after another.

"This is troublesome, there are dozens of ironclad beasts, the lowest strength is the ninth-level early primordial beast, and a few have reached the level of the ninth-level peak primordial beast. Yi Xuan's brows furrowed, and the dozens of ironclad beasts in front of him made him feel extremely prickly.

"Give up? impossible!"

Yi Xuan shook his head. When following the ironclad beast over, Yi Xuan didn't forget to secretly look at this gold concentrate. Judging from the scene he saw, Yi Xuan was eighty percent sure that this gold concentrate was a medium-grade gold concentrate!

If it was just a low-grade gold concentrate, after seeing these dozens of ironclad beasts, Yi Xuan might consider giving up. The value of low-grade gold concentrate is too small, and only medium-grade gold concentrate is produced. Zixiao Sword is now a mid-grade mystical weapon of the ground level, if it is a low-grade gold concentrate, Zixiao Sword may not be able to enter a grade after devouring the entire gold concentrate.

It's not worth taking the risk for the sake of the Zixiao Sword just having the possibility to advance. But if this gold concentrate is a medium-grade one, it is different, in addition to producing the middle-grade gold essence of the human rank, the medium-grade gold concentrate also produces the medium-grade spiritual gold stone!

"If it is a medium-grade gold concentrate, even if the content of the spirit gold stone in it is very small, it is definitely enough for the Zixiao Sword to be promoted to the level of the earth-level top-grade mystic! If the content of the spirit gold stone is too much, the Zixiao Sword may even be promoted to the level of the earth-level top-grade mystery!" Yi Xuan's eyes flashed with a hint of determination.

"You have to take a risk, the further you go to the Zixiao Sword, the more difficult it becomes, if you miss this time, you don't know when the Zixiao Sword wants to be promoted!"

Yi Xuan cautiously inspected the lair of this ironclad beast, and kept thinking about what method should be used to solve these dozens of ironclad beasts.

"There are a total of thirty-five adult ironclad beasts, fifteen are ninth-level early primordial beasts, ten are ninth-level mid-stage primordial beasts, seven are ninth-level late-stage primordial beasts, and three are ninth-level peak primordial beasts. And in these dozens of caves, there should still be some underage ironclad beasts. However, the strength of these underage ironclad beasts is equivalent to a seventh-level primordial beast at most, so there is nothing to be afraid of. As long as these thirty-five adult ironclad beasts are dealt with, then everything will naturally be self-defeating. ”

Yi Xuan lowered his head and pondered: "To deal with these thirty-five adult ironclad beasts, there are only two ways in front of me now. One is to wait until tomorrow dawn, when these adult ironclad beasts are out to forage, and kill them one by one. This method is relatively safe, as long as you are careful, there is no danger. ”

"However, this method will take at least a day. Moreover, this method is not a problem when dealing with the Iron Armored Beasts of the early and middle Yuan Beast level of the ninth level, I am ten percent sure that I will kill the other Iron Armored Beasts with one blow without alarming them!" Yi Xuan's eyes flashed with a hint of confidence, and then he frowned again.

"But this method is a little troublesome when dealing with the late-level iron-armored beasts of the ninth-level late level, and the strength of the iron-armored beasts of the late-level ninth-level Yuan beast level is not weak. Especially their scale armor, their defensive power is equivalent to that of an ordinary ninth-level peak primordial beast. If you want to kill the other ironclad beasts with one blow without alarming them, it's difficult!" Yi Xuan shook his head.

"As long as the other ironclad beasts are alarmed, the remaining ironclad beasts will inevitably gather in one place. At that time, even if I kill all the mid-level mid-level elemental beasts and one late-stage ninth-level ironclad beast, and the remaining six late-level ninth-level ironclad beasts and the three ninth-level peak elemental beasts gather together, I will not be their opponent. Yi Xuan shook his head again.

"I can afford a day, but if these nine-headed ironclad beasts stay together, it will be troublesome. When the Zixiao Sword devoured the gold concentrate, I needed to urge with all my strength and not be distracted. However, the movement of the Zixiao Sword devouring the gold concentrate must be not small, and keeping this nine-headed ironclad beast is a huge hidden danger. Yi Xuan couldn't help frowning.

"And if you use the second method, it's a bit of a problem. Yi Xuan's eyes flickered a little. Before entering the Xuanling Secret Realm, Yi Xuan deliberately purchased three thunderbolts with a power equivalent to the blow of a ninth-level peak Xuanshi. In order to have an extra means of dealing with too many enemies.

"Three thunderbolts with a power equivalent to a ninth-level peak mystic explode together, and the power of the explosion center is completely enough to blow all the ninth-level pinnacle-level ironclad beasts to pieces! As long as these dozens of ironclad beasts are gathered together, they can definitely be blown to death! Even if some of them are not dead, they will definitely be hit hard, and there is no need to be afraid at all!" Yi Xuan's eyes flashed with a gleam.

"But the question is, how do I bring them together?" Yi Xuan had a big headache about this. Both methods seem to work, but both have their flaws.

"Perhaps, I can do this!" Yi Xuan, who had been thinking for a long time, suddenly lit up.

"I can use the first method to kill most of the ironclad beasts first, and wait until the last nine ironclad beasts are all gathered together, and then use the second method! In this way, I can definitely kill all these dozens of ironclad beasts!" The more he thought about it, the more Yi Xuan felt that this method was feasible.

"Okay, that's it!"

Yi Xuan's eyes wandered, and he glanced at the old lair of this ironclad beast again.

"Everything, just wait for tomorrow. ”

Yi Xuan turned to leave, he wanted to explore this gold concentrate while the ironclad beast was resting.

The ironclad beast's perception was extremely sensitive, and even when it was resting, it was impossible for Yi Xuan to let the Zixiao Sword devour the gold essence. The movement of the Zixiao Sword devouring the gold concentrate will not be small, as long as it moves, it will be immediately discovered by the ironclad beast.

Yi Xuan's body was like the wind, and he kept heading towards the bottom of the gold concentrate. Yi Xuan didn't have to worry about the problem of not having a road, these ironclad beasts had been living in this gold concentrate for an unknown amount of time, and the passages that extended in all directions almost ran through the entire gold concentrate. At the same time, after the ironclad beasts had rested, Yi Xuan could finally disperse all his soul perceptions. However, for the sake of safety, Yi Xuan still completely avoided the vicinity of the ironclad beast's lair.

As soon as the soul perception that could envelop a radius of nearly three miles dispersed, Yi Xuan suddenly learned more information. Pieces of golden essence stones of different sizes and flashing golden light appeared in Yi Xuan's perception, and the further down he went, the more the number of golden essence stones became.

After walking down for nearly ten miles, Yi Xuan's perception was still a cluster of golden light of different sizes, but among these golden lights, there were some different things.

"Ling's surname!Lingjin Stone!It's really a medium-grade gold concentrate!" Yi Xuan's face showed joy.

Yi Xuan suppressed his excitement and continued to walk down, this was just the beginning, it was not over yet.

After continuing to walk down for nearly ten miles, Yi Xuan's perception finally lost the golden light.

"There is actually a range of nearly twenty miles, I thought that it would be eleven or twelve miles at most! A medium-grade gold concentrate within a range of twenty miles can definitely allow the Zixiao Sword to be promoted to the top grade of the ground level!" Yi Xuan's face could not hide his joy.

The sky is gradually getting brighter.

The ironclad beasts also left the lair one by one.