In the ghost world, this part of the monks cannot directly absorb the energy in the yin qi, but the energy in the yin soul grass belongs to the spiritual energy and can be used. Wang Lun put away the two Yin Soul Grasses.

This is an elixir, and it belongs to the repair resource.

If the Yin Soul Grass can't be kept for a long time, it will lose its effect in ten days, and that's none of the business, as long as it can be displayed after returning to the Spirit Sect.

Wang Lun continued to walk and stop, and did not hide his whereabouts, an outsider like him, who broke into here without concealing it, was naturally very obvious. But basically, it takes seven or eight minutes before a ghost sneaks up.

Without exception, all the ways that ghosts deal with him are sneak attacks, mind attacks and energy attacks.

In each sneak attack, there are only one or two ghosts, and it is rare for three or four ghosts to get together, probably because the ghosts here are basically alone.

Wang Lun feels that it is relatively relaxed now. All of the ghosts that appeared were blue-faced ghosts, and their combat power was generally below the middle stage of the Yudan Realm, so they did not pose any threat to him.

The reaction speed of the Heavenly Fire Ghost King was not fast, and it had been two hours since he released the two groups of ghosts, and the Heavenly Fire Ghost King had not taken any action to convey to him.

Perhaps, it was the Heavenly Fire Ghost King who listened to the report of his subordinates and measured his strength, and felt that no matter how many blue-faced ghosts he sent, it would be useless, and he was planning to go into battle in person?

Wang Lun remembered that the two groups of ghosts said that the right-hand man of the Heavenly Fire Ghost King was also a ghost king-level ghost. The other party was all dispatched, which was equivalent to three Yuan Infant Realm cultivators attacking him, but this was also the most extreme situation.

In this situation, he can still handle it. The ghost's mind attack is not a big threat to him, and the three ghosts of the late Yuan Infant level launched a sneak attack, at least he can react, and there is no problem in resisting the first wave of attacks, and then he can hold on for a while with one enemy and three, after all, the Silver Wing Divine Armor can help him offset a lot of attack power from the enemy.

In the next few hours, the Heavenly Fire Ghost King did not appear, and Wang Lun got a few more spirit grasses, of different types, but they were only suitable for ghost cultivators or cultivators who cultivated Yin Evil Exercises.

A total of nine plants were made before and after. According to the grade, one is a medium-grade elixir, and the others are low-grade elixirs.

Therefore, these elixirs together cannot be called treasures, and it is impossible to take these back with them.

In the blink of an eye, Wang Lun walked to a flat field. Most of the ghost realms are plains, but there is a three-meter-tall tree growing in this area, and the leaves are all curled, and there are almost no other plants to be seen.

In the past, there were not so few plant species, but now this place is about the size of five football fields, and the uniform trees grow, which are obviously different from the surroundings.

Ghosts don't plant trees here, after all, this kind of tree is not a spirit tree, and ghosts can't get any benefits from the tree, Wang Lun stopped, and out of curiosity, the mana broke through the soil under a tree.

Perhaps it is the special soil here that prevents other plants from growing here, and this tree is the only one in the family.

"It actually contains fire attribute energy?"

After Wang Lun dug a few meters deep, he unexpectedly found that red soil began to appear under the ordinary soil, and a faint fire attribute aura was released inside.

Spread out this kind of soil, that kind of breath was released faster, and Wang Lun also confirmed that after the breath inside dissipated, the soil became ordinary soil, and continued to dig down, the more obvious the fire attribute aura became.

"It's unlikely that some fire attribute magic weapon is buried underground, in a place as big as a few football fields, the fire attribute aura of the magic weapon can't be covered, it is estimated that it will be some kind of spirit stone?"

Now the fire attribute aura in the earth has no effect on the monk, it is not an aura, and it cannot be absorbed. Wang Lun was interested in creating something that made a fire-attribute breath, and wanted to find it.

The divine consciousness did not find it, which is also normal, the divine consciousness cannot analyze whether there are spirit stones underground through the ground.

After digging to a depth of about ten meters, Wang Lun saw the true face of what he was looking for.

It's not a spirit stone, it's a tree root that has lost its vitality.

The roots of the tree were coiled together, and Wang Lun dug up more soil along the side, revealing that the roots occupied an area of about 100 square meters, and all of them lost their vitality.

However, the fire attribute aura exists in these tree roots, and they have been in contact with the soil for a long time, so that the soil also has a faint fire attribute breath.

Wang Lun guessed that when the tree was still alive, it should be a spirit tree, maybe the fruit that bore fruit, or the flower that bloomed, was the spirit fruit spirit flower, which contained the essence of fire attributes.

After that, the spirit tree died, and after so many years, all traces of its existence on the ground were gone, but the roots of the tree buried in the dirt remained.

Wang Lun simply turned into a bulldozer, and his mana vigorously pushed away the nearby soil, and in a short time, almost half of the area of the football field was revealed.

The roots of the trees that appear are all pale red and intertwined, but you can see that they belong to the same tree.

"How big should this tree be when it is alive?"

Wang Lun couldn't imagine it. Because of the high probability, in an area as large as these five football fields, there was only this one spirit tree at that time.

Even if the powerful person who created his own small world planted a spirit tree here, he should only plant one, after all, following the growth law of elixirs in the wild, elixirs usually appear alone, and it is rare that there will be two elixirs of the same type on the same land.

Five football fields are so big, this spirit tree really covered the sky and the sun back then.

And now, only the roots remain. The roots of the trees are still rotting to varying degrees, and if they are devastated by the years, these roots will sooner or later disappear without a trace like the trunks of the trees, even if they are protected by ten meters of soil.

Wang Lun used the Thousand Exterminating Spirit Sword to cut one of the tree roots, and found that without the strength of the Thousand Exterminating Spirit Sword, a foundation-building monk was enough to urge the Thousand Exterminating Spirit Sword to cut the roots of the tree into sections.

The mana rolled the root of the tree to him, and Wang Lun used his mana to smash it, and the fire attribute aura stored in it was imprisoned by Wang Lun.

Wang Lun perceited it carefully, thinking that maybe he could extract the energy of the fire attribute from it and use it directly for some monks.

But the fire attribute aura is not a ready-made energy, the roots of the tree have lost their activity for too long and too long, and the original fire attribute energy has not only been disappearing, but in fact, the grade is also decreasing again and again, so now, even the Qi Cultivation Realm cultivators who practice related exercises are no different from chicken ribs when they absorb this fire attribute breath, and the effect is extremely weak.

Even if you give a Qi Realm cultivator a large number of these tree roots and absorb them for a whole day, the effect may be as good as cultivating in the sect for two days.

And absorbing the fire attribute breath in the tree roots, the speed is very fast, absorbing a large number of tree roots for a whole day, he doesn't have a Qiankun bag, Guo Qunqi only gave a storage ring, all stuffed into this kind of tree roots and brought it back, it is estimated that it is better to bring a lower grade spirit stone back.

Wang Lun decisively gave up the idea of using these roots.

However, the taproot of the former spirit tree has not yet been seen.