I have a forging furnace.

Chapter 18 Middle stage of Qi training
As for the expenses, Lin Yu didn't care. As long as the tasks he assigned could be completed, he would not pursue the details.

"This is what I should do." Seeing Lin Yu satisfied, Tang Mai was also very happy.

Next, Lin Yu assigned a few more tasks, keeping the three of them busy.

Lin Yu himself walked into the practice room and began to practice "Small Hidden Spirit Art".

Although there is a word "xiao" in the name of Xiaoyin Lingshu, it does not mean that its effect is small.

The technique describes that one can hide one level of the Qi training stage when one is just getting started, two when one is at minor success, and five when one is at major success. Once it is complete, all of them can be hidden, and even a cultivator in the foundation building stage will not be able to distinguish them without careful investigation.

However, this technique is usually difficult to practice and requires a very strong understanding to master, so it is not widely popular.

Lin Yu is not afraid of this kind of magic that requires understanding.

As long as he can get started, he can use the spirit stones to move forward.

Perhaps it was because Lin Yu's personality was very compatible with this concealed martial art, and he was able to get started faster than he had imagined.

In less than three hours, Lin Yu saw the words "Xiaoyin Lingshu" on the furnace.

It was already night, and Lin Yu did not continue to waste time on the Yunyan Steps. Instead, he took out the mountain of used Yuanqi Pills in his storage bag and began to refine them.

Tens, hundreds, thousands.
Lin Yu's aura rapidly increased as the Yuanqi Pill was refined.

Because the spiritual power obtained through refining is pure, even if the spiritual power grows very quickly, there is no problem of unstable foundation.

His current foundation, on the contrary, is terrifyingly solid.

His spiritual power has both quality and quantity. If those who are stuck at a bottleneck due to problems with their foundation see his current state, they will surely go crazy with jealousy.

"Boom."

A small shattering sound came from Lin Yu's body, and the level of spiritual power in his body also quietly increased by a small level.

Continue refining.

All the wasted Yuanqi Pills produced in the remaining seven days were collected by Lin Yu.

For this purpose, he deliberately asked Tang Mai to buy him a few more storage bags because one bag was not enough.

Yuanqi Pills are the most basic elixir for cultivation. Xuanyang Sect's alchemists need to refine some of them every day, which results in a terrifying number of wasted pills.

With the rapid consumption of the waste pills in the storage bags, when two storage bags of waste pills disappeared, Lin Yu's spiritual power reached a bottleneck again.

Lin Yu did not open his eyes, but looked at the refining furnace deep in his mind.

"Spiritual Sea Foundation Building Technique" Level 1999 (2000/)

The peak of the third level of Qi training.

At this moment, Lin Yu could clearly feel the bottleneck in his body, which was caused by his inferior spiritual root talent.

This is the reason why the disciple’s level is determined based on his spiritual root talent when he first enters the sect.

A cultivator with superior spiritual root talent will not encounter any bottleneck before reaching the foundation-building stage. As long as they reach a certain level of cultivation, they will naturally be able to break through.

For inferior spiritual roots, there will be a small bottleneck at every small level. Once the realm gap is encountered in the early to middle stage or the middle to late stage, a larger bottleneck will be encountered that is even more difficult to break through.

The same resources, when given to disciples with superior spiritual roots, would produce results very quickly, but when given to a disciple with a talent like Lin Yu, it would be like getting water tickets.

What Lin Yu is facing now is the big bottleneck in the early and middle stages.

When ordinary disciples encounter this kind of bottleneck, they often need to prepare for a long time and spend a lot of money to prepare elixirs to break through before they have hope of breaking through.

But Lin Yu felt that as long as he pushed forward lightly, the bottleneck in front of him could be broken.

He thought so and did so.

A waste pill was refined, and the pure spiritual power was integrated into the Dantian.

After this ray of spiritual power was absorbed, the huge and pure spiritual power in Dantian instantly became agitated, and then, with a bang, the bottleneck was broken. Lin Yu's momentum rose to another level.

"Master, has he made another breakthrough?"

Tang Mai, who was practicing, suddenly sensed the fluctuation of spiritual energy in the practice room and knew that Lin Yu had probably made a breakthrough.

Being able to make breakthroughs in such a short period of time, Tang Mai knew that this young master either had a great opportunity or had a powerful backer.

As for which one it is, he doesn't and dares not to investigate.

Moreover, the more powerful Lin Yu becomes, the further he can go in his future as a butler.

So he was not jealous at all, but instead felt happy from the bottom of his heart.

The other two twins had the same idea.

Lin Yu did not rest the entire night. He had been stabilizing his cultivation and trying to achieve some minor success in the Minor Hidden Spirit Technique.

The next morning, Lin Yu looked at the results of the night:
"Spiritual Sea Foundation Building Technique" Level 103 (3000/)

"Small Hidden Spirit Art" Completed (1/500)

The changing numbers and the changes in his body made Lin Yu feel very accomplished.

Especially after the small hidden spiritual art reaches perfection, it can hide up to five small realms.

Lin Yu, who is now at the fourth level of Qi training, can even conceal all fluctuations of his spiritual power and become an ordinary mortal.

Of course, the spiritual energy fluctuations displayed by Lin Yu now have been maintained at the first level of Qi training. If it is too low or too high, it will arouse suspicion.

Getting ready to set off, sisters Tang Mai and Fang Wenzhen have already prepared the things they need to carry.

Since their master Lin Yu was going out to complete his garrison mission, they naturally had to follow and serve him.

After reaching the late stage of Qi training, you can refine flying instruments for transportation, but before the late stage of Qi training, you still have to take public transportation.

Xuanyang Sect has a special Flying Bird Hall which is responsible for this. The Flying Bird Hall raises and breeds many gentle flying beasts to meet the travel requirements of disciples in the sect.

"To fly to Qiulin Town, each person needs one spirit stone. Those who are traveling on a mission can be exempted."

A huge white crane stood there, and next to it was a disciple of the Flying Bird Hall who was controlling the white crane. Three servants required three spirit stones, but Lin Yu himself could be exempted.

The three spirit stones were treasures to Lin Yu when he was a menial disciple, but to Lin Yu who is now able to refine the anti-aging pill, they are really nothing.

Tang Mai had already told Lin Yu that the heads of the chambers of commerce in Fangshi were very enthusiastic about him because he could produce the Rejuvenating Pill.

With the Rejuvenating Pill, he will never be short of low-grade spirit stones.

When the disciples of Feiqin Hall saw that Lin Yu bought tickets for the three servants, they couldn't help but look up to Lin Yu.

I don’t know which family’s second-generation immortal is going out for a trip again, but it seems that there is nothing fun to do in Qiulin Town.

The disciples of the Bird Hall muttered to themselves.

The white crane is very fast and can fly a long distance in the air with just a flap of its wings.

They set out in the morning and in less than half an hour, Lin Yu and others arrived at Qiulin Town.

The garrison was on a mountain on the side of Qiulin Town. Lin Yu went straight there according to the mission instructions.

Iron crystal ore is one of the materials for refining magical instruments. It is famous for its hardness, which is more than three times that of ordinary iron in the mortal world.

Several people walked to a dense hill, found a direction, and stepped in. As they entered, their figures disappeared from the outside world.

The iron crystal mine area is concealed by a formation and is unknown to the outside world.

(End of this chapter)