Looking at the magma-like thing in front of him, Chen Gu's eyes lit up.

"Synthesis."

Anyway, there is hardened earth all over the ground, and it doesn't cost much mana to summon the fire element.

Just summon it and craft it.

For things that don't consume too much mana, Chen Gu has always been very generous.

The fire elemental was summoned batch after batch, and batch after batch was synthesized into this holy light magma.

After the synthesis of these holy light magma, they did not disperse quickly, but gathered in a strange situation.

Chen Gu noticed that when ten Holy Light Magma gathered together, it would turn into a larger Holy Light Magma, and the level would increase exponentially.

In the end, these holy light magma were raised to level 6 before they stopped synthesizing.

At that time, the huge Holy Light magma had grown to be more than ten meters tall, and the huge magma appearance reminded Chen Gu of Lyerlith in the Fire Source Realm.

It's a pity that no matter how much the Holy Light Magma changes, it is only green, and it only grows to this level at most.

If this was any bigger, Chen Gu believed that he could be called a lava lord.

After dissipating the extra holy light magma, Chen Gu took a few steps forward.

He soon came to the base of the giant tree.

Chen Gu noticed that at the original roots of this giant tree, there were actually many marble buildings.

However, when the giant tree was uprooted, part of the building was thrown into the lake, and the other part of the building was smashed by the giant tree.

At the root of the tree, Chen Gu saw a lot of marble materials buried in the soil.

These are exactly where the previous buildings were.

There are bits and pieces mixed in with these materials.

Chen Gu walked along the way, and the corpse eater vine helped him pick it up.

[You got 3117 gold coins.] 】

【You found the Elven Ornament (White)*6

【You found the elf tableware (white)*12】

【You found a Wooden Table Fragment (White)*4】

【……】

【You found the Mystery Necklace (Green)*1】

【You found the Sacred Heart Leaf (Green)*3】

【……】

【You found Elven Light Armor (Blue)*1】

【……】

[Elf decorations (white): Elves use decorations to decorate the house, such as candlesticks, side lamps, etc., which are useless. 】

[Elf Tableware (White): Tableware such as knives, forks, plates, etc., made of silver, is of little use except for a little money. 】

[Wooden table fragments (white): A wooden table that has been shattered, if it is not the wood of the wood, this thing is useless at all. 】

【……】

[Mystery Necklace (Green): Elves' usual decorations, but for ordinary people, this is a good thing that can increase the upper limit of mana by 30 points. 】

[Sacred Heart Leaf (Green): A leaf that has been transformed by Holy Light can release a Holy Light Bullet with an attack power of 500. 】

【……】

[Elven Light Armor (Blue): Defense +11, iron armor with only leather armor weight. 】

【……】

The things found along the way, Chen Gu can use them all by himself, and pack everything that can't be used.

He felt that these were the best synthetic materials.

I can't use it now, but it doesn't mean I won't need it in the future.

Chen Gu now needed to gather every strength to prepare for dealing with the undead Black Keep.

Don't look at him picking up garbage right now, but there is always a time when this garbage will be useful.

If it weren't for the fact that the space in his vine carriage was too small, he would even want to pack some dirt here.

Picking up all the way like this, Chen Gu finally came to the root of the tree.

Standing at the root of the tree, Chen Gu touched the soil on the root.

Like the hardened soil of the island, the soil at the roots of the trees is imbued with the power of the Light, but it is lifeless.

After Cheng removed the soil, Chen Gu took out an axe and slashed it vigorously at the root of the tree.

He wanted to try it out to see if it was possible to cut down some material from the giant tree.

If it could, it would naturally be the best, Chen Gu didn't have to think about it to know that the quality of the materials for such a big tree would definitely be better than ordinary things.

Even if it doesn't work, there will be a lot of wood for such a big tree.

But as soon as Chen Gu cut down with an axe, his hand instantly became numb.

The iron axe flew out on the spot, and when Chen Gu picked it up, he found that the axe had cracked so much that it could no longer be used.

Taking a closer look at the place where the axe had cut down just now, Chen Gu found that there was no trace of the location of the root of the tree at all.

It can be seen that the axe can't hurt the tree in the slightest.

Seeing this situation, Chen Gu beckoned to the corpse vine again.

The corpse vine that was acting as a test subject quickly came over.

[Necro Vine +3] + [World Tree (Juvenile, Dead)] = [??? (success rate 0.0001%)】

World Tree?

Chen Gu almost screamed.

But on second thought, no matter what game or novel world it is, it makes sense for elves to have a world tree.

It's just that the World Tree that fell down, Chen Gu really hasn't seen it.

While complaining, Chen Gu checked the description of the World Tree.

According to the information that could be pulled down, Chen Gu knew that the world tree in front of him was not the mother tree of the elven clan or something.

Rather, the elven queen five thousand years ago thought that the elves must have a world tree to plant.

For the first 3,000 years, the World Tree grew very well.

Until 2,000 years ago, the World Tree didn't seem to grow much, and it only grew to a little more than 2,000 meters before stopping.

The people of the elven clan studied for a long time, but in the end they didn't find out the reason, so they simply put the world tree on the island and didn't care about it anymore.

Therefore, the World Tree in front of him is actually an ancient tree that has grown for three thousand years, and because it absorbed too much holy water, it was finally raised to death without nutrients.

The most speechless thing is that after being raised to death, the World Tree did not decay and did not become an undead spirit because it was soaked in holy water.

In this way, it was not until more than a thousand years ago, when the undead natural disaster occurred, that the World Tree fell at the moment when the elves abandoned the holy city.

Now the World Tree is hopeless.

But if Chen Gu wants to use this World Tree to synthesize a pet, don't think about it.

No matter what is used to synthesize, the final synthesis success rate will not exceed 0.001%, even if Chen Gu invites the Golden Dragon or the Wisdom Ancient Tree.

But here's a hint of the secret.

If Chen Gu could find the heart of the elven city, he could use the fallen World Tree to build a new elven city.

Chen Gu was also a little speechless about this situation.

Even if I have the heart of the city, I won't build it here, and the elven holy city not far away is not fragrant.

Although there are undead in it, as long as the undead are cleaned up, this is a large city with a population of tens of millions.

As long as he has time, he can assemble the troops to fight the undead Black Keep.

Building a city on this world tree, Chen Gu is not sick in his brain.