Ultimate Upgrading System

The Fixed Light Sword carried a hissing sound as it hacked into the Flame Lion King's neck.    

Fresh blood immediately gushed out violently...    

The Flame Lion King wanted to roar out loud. It opened its mouth wide, but only a 'brilliant' sound could be heard from the bottom of its throat.    

"Ding! Congratulations to Host for killing a beginner magic beast Flame Lion King. Obtained 200 source energy."    

Yang Ying was extremely excited in his heart. There were many cages in this passageway. If he could harvest all the basic magic beast in this prison, he would be rich!    

With a thought, he began to walk towards the cages behind him.    

The magic beast in the prison behind him were all sleeping. When Yang Ying entered, these magic beast did not have the slightest reaction. Furthermore, they were still chained to the wall. Yang Ying harvested them very happily.    

As Yang Ying continued harvesting, the system's voice also came.    

"Ding! Congratulations to Host for killing a beginner magic beast Flame Lion King. Obtained 200 source energy."    

"Ding! Congratulations to Host for killing a beginner magic beast Black Electric Python. Obtained 200 source energy."    

"Ding! Congratulations to Host for killing a beginner magic beast Great Strength Bear King. Obtained 200 source energy."    

...    

Yang Ying didn't even bother counting how many there were.    

Right now, time was the most precious thing. If those people in the cave came back, wouldn't his journey of leveling up be cut off?    

After killing all the magic beast in this tunnel, Yang Ying looked around but found nothing special.    

He then rushed towards the hall. He wanted to find out what was in the other three tunnels!    

After Yang Ying arrived at the main hall, he didn't stay any longer. He rushed towards the tunnel on the left side.    

The structure of the first half of the tunnel on the left side was very similar to the previous one. He ran at full speed, and at the same time, he spread his senses to the maximum.    

In less than a quarter of an hour, Yang Ying had already passed the first half of the tunnel.    

He discovered that there were a few stone rooms in the second half of the tunnel, and the stone room in the front was very large. There were a few large tables inside, and there were many different kinds of items on the tables.    

Yang Ying could recognize some of the items. Some of them were auxiliary tools used to refine formation disk, and some were used to inscribe Formation. There were also some that were used to process medicinal herbs.    

As for the specifics of refining Formation formation disk and formation disk, he did not see them in this stone room.    

Yang Ying estimated that the largest stone room should be used by those people to process the ingredients before refining the Formation and formation disk. After processing the ingredients, they would take them to other places to refine the Formation and formation disk.    

There was also the processing of the medicinal ingredients before refining the Formation. After the processing was done, there would be people who would go to other places to refine the Formation and formation disk.    

Yang Ying then looked towards the stone room behind him. He saw a stone room with a refining table to concoct the formation disk.    

He carefully searched and only found a few formation disk that had yet to be inscribed with spirit patterns on the refining table.    

Looking at the quality of these formation disk, it was not too bad. It was already a High-grade Formation Plate. He also did not stand on ceremony and casually threw it into his own Storage Ring.    

In the last stone room, Yang Ying discovered a pill furnace. There should be someone who had refined a pill not long ago in the pill furnace.    

He found a bottle of pills on the table next to the alchemy furnace. There was a label on it, "Type 3 pill."    

"Type 3 pill?" Yang Ying muttered to himself. Why would someone give him such a strange name for the pill he concocted?    

Curious in his heart, he casually removed the cork of the medicinal pill.    

Instantly, a strange medicinal strength surged out of the bottle and formed a small black cloud at the mouth of the medicinal pill.    

Yang Ying discovered that something was wrong. Up until now, he had never encountered any medicinal strength like this. Furthermore, this cloud did not look like it was formed from Spirit energy!    

"What's going on!?" He casually wanted to pour the pill onto his palm, but at this moment, a thought flashed through his mind, and he suddenly felt a sense of danger.    

This feeling was very strange, as if some danger had descended!    

He hurriedly looked up and around, but he did not see anyone.    

"No, this warning did not come from the surroundings, but... from medicinal pills! Hm?" With this thought, he hurriedly retracted his hand and poured a pill onto the table.    

A pitch-black medicinal pill appeared in front of Yang Ying. The surface of the medicinal pill was round and round, and on the surface of the medicinal pill, it faintly emitted a strange energy.    

This... this doesn't look like a Spirit energy! What could this be?    

This strength, why did it look so much like the strength of a devil servant's physical strength?    

That's right! I was wondering why it felt so familiar. This, this is clearly the power of the beginner devil servant from before!    

Also... those elementary magic beast in the tunnel just now, the strength in their bodies is also this strength!    

In that case, could it be that the beginner devil servant and beginner magic beast were produced because they consumed this medicinal pill?    

En, this also made sense! When Xu Ning was clear at that time, didn't he say that it was because he had been captured to experiment with the medicinal pill!    

Could it be that this was the medicinal pill?    

At that moment, a black cloud had formed above the pill.    

Yang Ying hurriedly placed the pill back into the pill bottle before stuffing the bottle back into the bottle.    

After that, he took out an empty Storage Bag and put the bottle back into the bottle.    

After that, Yang Ying carefully searched the stone room.    

Finally, he found two bottles of pills with the label of "Type 1 Pill" and five bottles of pills with the label of "Type 2 pill" on them in a secret room.    

Yang Ying did not dare to be careless. He checked the bottles again and put them into the Storage Bag.    

After doing all this, Yang Ying wanted to find the pill formulas for these medicinal pills, but after carefully searching the stone room, he still did not find anything.    

Just as Yang Ying was about to give up, he suddenly discovered that the table in front of him was placed in a very strange manner.    

With his own refining habits, the position of this table made it very inconvenient for him to refine medicinal pills! Medicinal pills simply could not be placed on this table.    

This... Could it be that after refining medicinal pills, this table moved again?    

With this thought in mind, Yang Ying gently moved the table to the side a little.    

Immediately, he discovered that on the ground, where the table had been placed, there was a small Formation.    

He naturally recognized this small Formation.    

This Formation was somewhat similar to the restrictions in the treasure vault. It was called the Hidden Search Formation. Generally speaking, this Hidden Search Formation was used to hide treasures.    

Although this Formation was not big, in reality, this Hidden Search Formation was a type of Formation.    

Every Hidden Seeking Array had a subtle difference.