[Alignment: Kind, Lawful]

[Previous level: Level 4]

[You can breed thirty natural elves every day]

[Required for next upgrade: 10,000 soul stones]

[Special reminder: The fourth-level military building elf mother tree has a 5% probability of breeding elemental elves, ancient elves and other top-level military units. 】

After the elf mother tree is upgraded,

The girl Olivia also hummed three times with satisfaction, "Lord Tairen, a very powerful force has appeared in my body. I feel like I can go into seclusion and break through again!"

Tang Xiaofan chuckled and said okay.

Then open the troop summoning interface,

[The elf mother tree lacks life and natural magic power. Can it breed natural elves? 】

Tang Xiaofan chose [Yes].

The energy is insufficient just because the elf mother tree has just been upgraded and its volume has increased too much, and it can hold more "energy".

So it is also possible to give birth to elves.

Soon the elf mother tree became starry, with countless green lights pouring down.

After a moment, fifteen light balls appeared on its branches. The light balls quickly grew in size and were vaguely visible.

There is an elf in each elf ball.

After that, the elf balls flew down one after another,

After being broken, they turned into a group of beautiful and lovely elves.

"Mother!"

"Lord Lord!"

"Wow, praise Lord, for giving us life!"

"Um!"

Tang Xiaofan smiled and nodded at these cute elves, and then said to the beautiful elf elder Becky: "Take these elves to meet Monica and help them improve their strength as soon as possible!"

He had just seen that the fifteen elves were all natural elves.

There was no luck in breeding elemental elves or ancient elves.

"As you command, Lord Lord!"

Elf elder Becky saluted respectfully, and then set off with the elves.

Tang Xiaofan took a look at his soul stone inventory.

[Soul Stone: 14620]

It seems like a lot, but it’s actually very little.

You can also upgrade the Elf Mother Tree to level five.

In fact, if it weren't for the fact that the farmer's factory needed to upgrade to level six, which required a hundred thousand soul stones, he would not have consumed the soul stones on the Elf Mother Tree.

Olivia asked cautiously:

"Lord, when are you going to upgrade the Elf Mother Tree next time?"

Tang Xiaofan said: "Before upgrading the Elf Mother Tree, I may have to upgrade the Farmer Factory to level six first."

Olivia said disappointedly: "That means we have to wait a long time!"

Tang Xiaofan looked at her and said with a smile, "Then let the elves in the elven tribe speed up hunting monsters in the wild. If they send enough soul stones, I will consider upgrading your body to level five!"

"Praise you, great lord! Great decision!"

Olivia was very happy and immediately used her soul connection with the tribe elves to tell the elves not to waste time and go out to hunt wild monsters.

As for Tang Xiaofan, he returned to the castle, checking the situation in the castle and browsing the world chat channel.

Time passed quickly, and it was noon in the blink of an eye, and the auction for the Skeleton Undead Transformation Technique had ended.

A total of 5,745 soul stones were sold.

The price is almost as high as the original architectural drawings of the Skeleton Warrior type.

Of course, this has a lot to do with the fact that the strength of the castle lord is improving. The stronger the castle lord is, the more soul stones he can hunt, and he will naturally be very generous.

After receiving this batch of soul stones, Tang Xiaofan's reserve of soul stones and exotic crystals reached 20,365 respectively.

At noon,

A very powerful force of fire element suddenly appeared in the castle courtyard, making the surrounding air become hot.

"The fire dragon egg hatched!"

Tang Xiaofan immediately stood up and came to the yard. He saw a huge red dragon egg suspended in the sky, surrounded by six huge flaming dragons spitting hot dragon breath towards it.

Soon after,

The fire dragon egg began to tremble violently, accompanied by a sound like a cracking stone,

"Soon!"

Tang Xiaofan waited for the birth of the little fire dragon,

But at this moment, the Terminator guide Cong Xukong walked out. He came to Tang Xiaofan and saluted respectfully: "Lord Xia, a large number of bird monsters and the master of the human castle appeared near the Twin Mountains. !”

"Their goals."

"It should be our black technology castle!"

At this moment,

Nearly thirty kilometers away from the Black Technology Castle, near the Twin Mountains,

A large group of flying soldiers gathered here, including horned eagles, dragon eagles, black-striped finches, thunder eagles, wyverns, harpies, gold-eating bees, and so on.

Without exception, all are flying units.

There are intermediate arms and high-level arms.

Their number is not low, there must be thousands of them in total.

Moreover, there are waves of flying corps gathering in the distant sky.

And at the forefront of every flying unit, there is a human figure.

They rode on the flying soldiers, walked across the sky, and gathered towards the famous Twin Mountains.

"Brothers, here I come!"

"Haha, I flew day and night for thousands of kilometers and finally arrived at the Twin Mountains!"

"Is this the Twin Mountains? It doesn't seem like there's anything special about it!"

"There are more and more people!"

"Don't worry, there are more to come! We are just the first wave of castle masters to arrive at Twin Mountains, and there are more alliance members coming from behind!"

"There are only a few dozen of us in total, and thousands of flying troops are not that many at all!"

"Yes!"

"There are hundreds of castle masters in our alliance who responded to the call, enough to gather nearly 100,000 flying troops. When they all arrive, the scene will be truly spectacular!"

"Our army is all over the mountains and plains. Tang Xiaofan will probably be frightened when he sees it!"

"In at most one day, all members of our alliance will gather together!"

"We still came too early!"

"There is no other way. Who will let us get the closest? And we don't dare to camp randomly on the road. We are worried about being attacked by monsters on the ground, so we can only rush to Twin Mountains."

"Compared with the dangers on the way, Twin Mountains are actually safer!"

"The most dangerous place is the safest place!"

"good!"

"I'm afraid Tang Xiaofan didn't expect us to come so quickly!"

"By the way, do you think Tang Xiaofan knows that our anti-demon alliance will gather in Twin Mountains and then attack his black technology castle?"

"Maybe you know, maybe you don't know, but what does it matter? Let's attack Tang Xiaofan's castle first, and then continue to attack his elf tribe."

"What if Tang Xiaofan didn't escape?"

"Then let's start a war!"

"That's right. I don't believe that his castle is really that powerful. Hundreds of mid-level, high-level, and top-level castle masters combined can't defeat him?"

"Don't worry, we will definitely win this expedition!"