"Isn't there still your master here?"

"Tongzi, send out a mining robot."

As Lin Xue finished speaking, the bottom hatch of the submarine opened, and a round object was thrown out.

After the sphere entered the bottom of the pool, its limbs stretched out, and it transformed into an eight-clawed monster.

The eight-armed monster stretched out its long mechanical arms and picked off the gems deeply embedded in the mountain wall one by one with its bare hands, then put them into the hollow groove in the middle of itself.

Inside is a smart storage box. Don't be fooled by its small size; it has a lot of space inside.

The three masters and their apprentices, along with 629, watched the mining robot busily working at the bottom of the pool.

Surprisingly, that tiny thing was unaffected by the water pressure and the impact from above.

The long mechanical arm poked its hand into the cliff face, and its body remained steadily in place.

This little thing is much more useful than them.

"Master, this puppet is amazing!"

"This disciple wishes to learn this knowledge. I wonder if Master could teach this disciple?"

Li Zichen, who was eager to try something new, has already started acting cute and charming.

"The chief steward has detailed information on this subject; you can ask him for it later."

"If you have any questions, just ask the head steward; he's more knowledgeable in this area than I am!"

It is said that everyone has their own expertise, and although Lin Xue has studied in several worlds, she is still able to barely create these robots.

But when it comes to professionalism, you still have to rely on your own system.

After all, the system has a larger brain capacity, which is not only faster and more efficient in learning, but also stronger in terms of robot modification capabilities.

After the system upgrade, many machines are now more convenient and energy-efficient to use than before.

"Grand Steward, although I have become a disciple of my master, you have watched me grow up."

In my heart, you are only slightly lower in status than my master.

"Please teach me, Chief Steward. I will treat you as my master from now on and take care of you both in your old age until the end!"

Having survived this secret realm, Li Zichen's shamelessness has only grown.

In order to learn the technology in 629's hands, this kid has no shame whatsoever.

That tormenting skill was no less than that of a femme fatale who brought ruin to the country.

"Alright, alright, stop shaking me. I'm still piloting the submarine!"

"I'll organize the materials and give them to you when I get back. I also have a lot of lighting and shadow tutorials. You can learn from the teachers in them!"

"However, this is a secret of our Yunhai Sect. You can study it yourself, but you must never pass on these materials and images."

No one expected that today's actions would bring back a powerful figure in later generations who relied on technology for cultivation.

This powerful figure led his mechanical army and conquered a country, establishing himself as the monarch.

By using agricultural robots to improve the country's productivity, the people living in his country are experiencing a surge in happiness.

Not only did no one dare to provoke them, but they also saved a large amount of physical labor.

On the other hand, the three of them stayed at the bottom of the pool for more than 10 hours.

The collecting robot collected all the gems it could see.

It even unearthed some things hidden deep within the cave walls.

The depths of this pool, which were once glittering with jewels and piled with various gems and refining materials, have now become pitted, uneven, and dull.

However, the three of them were all satisfied. If it weren't for the fact that several more groups had arrived above the waterfall and hadn't left yet, they would have really wanted to leave immediately.

"Host, the people up there just won't leave. We can't stay at the bottom of the pool forever, can we?"

You have to understand that this submarine consumes a lot of energy; every minute it burns through spirit stones!

Do you have any ideas?

Lin Xue was also getting a little bored, but if they went out now, they would definitely become targets for everyone.

What else can we do but continue hiding down there?

"How about we just find a place and dig a tunnel out?"

As 629 uttered those words, the eyes of the three of them lit up simultaneously.

Soon, a digging robot was deployed from below the submarine.

As the excavating robot swung its arms, a sloping upward passage quickly appeared.

The passage is too narrow for a submarine to pass through.

The group had no choice but to disembark from the submarine and swim into the cave.

Fortunately, the excavation robot found a relatively flat area where the water pressure and agitation were not too strong.

Once they were outside, they immediately swam into the cave, where they would no longer be disturbed by the pool water.

We swam in the cave for a long time before finally reaching a clean area.

We followed the tunnel dug out by the excavating robot until we reached a hill behind the waterfall.

This is the big mountain next to the waterfall; half of it is a cliff that stands against the waterfall.

On the other side, there was lush green grass and sparse trees.

Fortunately, no cultivators saw them when they came out, although they were a bit disheveled and their makeup was ruined.

But everyone was happy, after all, they had found so many gems.

Since their makeup was already ruined, the group didn't continue with their previous dressing up and instead changed back into their original clothes.

"So you've switched it back already?"

After changing his clothes, Li Zichen regretfully put the tattered clothes into his storage bag.

"What's wrong, junior brother? Haven't you had enough fun yet?"

Zhao Yunting walked over and heard his junior brother's words, and couldn't help but tease him.

Actually, I do feel a little regretful.

Not to mention the junior brother, he didn't get his fill either.

"Zichen, when did you break through again?"

When Lin Xue came out after changing her clothes, she immediately noticed that her little disciple's cultivation had increased again.

He went directly from the third level of Qi Refining to the fourth level.

When did you break through?

Lin Xue did not recall any signs of her young apprentice's breakthrough, nor did she see anything unusual about him along the way.

"ah?"

Have I broken through?

Li Zichen was taken aback by what his master said, and quickly checked his internal condition, only to find that he had indeed broken through.

"Junior brother, you're really good at hiding things! You broke through without even telling your senior brother?"

Zhao Yunting hadn't noticed his junior brother's cultivation level at first; it was only after hearing his master's words that he started to check.

"Master, senior brother, I really don't know when I broke through?"

"I probably broke through while walking in the cave just now? After all, I was only at the third level of Qi Refining before entering the bottom of the pool!"

After Li Zichen said that, everyone agreed that it made sense.

"It was probably too dark in the passageway just now, so no one noticed!"

Zhao Yunting rested his chin on his hand and made up an excuse for his junior brother.

"It's also possible that when he entered the deep pool, Little Li was so frightened that he broke through to the next level!"

629's words made Li Zichen blush.

Now that he's changed back into his own clothes, he's become that weakling Li Zichen again, and even his skin has become much thinner.