Chapter 17： (1/2)

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Height: 0

Number of Sea Elves: 0

Growth value: 0

Output: 0]

Okay, a lot of zeros.

However, after studying the panel of the Ocean Tree, Renn has found a way to cultivate it.

"The main task is to upgrade the tree of the ocean to the bud state, the task reward: 30 experience, 3000 gold coins."

The sound of the system rang.

It only needs 2000 gold coins to upgrade the ocean tree from the germination state of the seed to the budding state.

Ryan did not hesitate, and directly chose to promote.

After the 2000 gold coins were spent, I immediately saw that where the ocean tree was planted, among the soft fine sand on the bottom of the sea, a bud broke out of the sand and stood against the wind!

"It's coming out~"

On board the Cetus, the mermaids made joyful voices one after another.

"The upgrade is successful, the main task is completed, the host gains 30 experience and 3000 gold coins."

The mission was successfully completed.

"The main task is to upgrade the tree of the ocean to the seedling state, the task reward: 40 experience, 4000 gold coins."

The sound of the system sounded again.

Lane started to improve again.

The gold coins required to upgrade to the seedling state have doubled, from 2000 to 4000, which is comparable to the reward of the task.

But Renn still has nearly 300,000 gold coins, and he has a lot of money, and he doesn't care about that much anymore.

Renn threw the gold coins in again.

"Improve success, growth time is 1 hour."

Suddenly, Ren saw that the shoots of the ocean tree began to grow rapidly.

Chapter 0026 Seedlings dozens of meters high! Defensive building!

Rain did not use gold coins to accelerate.

Gold coin acceleration, 2 times acceleration is actually the most cost-effective.

2 times the gold coins, directly reducing the time by half.

3 times the gold coins can only reduce the time by two-thirds, the more you go up, the less cost-effective.

Of course, in a particularly urgent situation, 10 times the gold coins are directly completed, and sometimes it is necessary.

But this time Ren didn't accelerate and waited patiently.

He didn't wait either.

Because Ren saw that there was a column of defensive buildings on the panel of the Tree of the Sea.

The panel of Mermaid Island also has a column of defensive buildings, but the defensive buildings of the Tree of the Sea are different from the defensive buildings of Mermaid Island.

There is no water arrow tower in the defensive building of the Tree of the Sea.

is an arrow tower under the sea.

Of course, there are other defensive structures.

For example, a defensive structure that can float in the water, and a defensive structure that can be built on the ocean tree, but it has not been unlocked yet.

will not be unlocked until the tree of the ocean continues to grow.

The price of a submarine arrow tower is not cheap. It is four times more expensive than a water arrow tower and requires 2000 gold coins.

However, being able to spend two thousand gold coins to own a submarine arrow tower on the bottom of the sea is such a good thing that no one else would even think about it.

After Ryan asked the five mermaids to guard the growing tender teeth, they began to find a suitable position.

"The tree of the ocean is two thousand meters high before it rushes out of the water. After rushing out of the water, it must grow several hundred thousand meters high. A tree of this height must be quite thick."

Renne thought.

Think about it and know that a tree several kilometers high must be quite thick.

The diameter of the trunk is more than 100 meters. It may be thicker, reaching a few hundred meters.

And Renne still has to think about a problem.

That is whether the tree of the ocean will always grow up. If it grows up all the time, then you have to leave a place.

In addition, there is another important question, is it impossible to put the enemy at the root of the ocean tree to solve it, right?

I must defend against the enemy.

Just like Mermaid Island, it is impossible to put pirates into the island to solve it, right?

What kind of ruin the island?

Therefore, after Rehn swam around the young seedlings of the Ocean Tree on the Whale, he finally decided to build 10 submarine arrow towers one kilometer away from the Ocean Tree.

These 10 submarine arrow towers will circle the ocean tree.

This is the first defensive building.

Behind, Ren will look at the situation and build more defensive buildings.

The ocean is a three-dimensional environment.

and it is a rather three-dimensional environment.