That burst of laughter felt somewhat deranged and jarring.

It made people feel vaguely uneasy.

Yuan Mu's heart began to race as well, unsure whether the man's laughter stemmed from a particular hatred for the Supernatural Special Operations Bureau, or if it held some other meaning.

Fortunately, after the old man finished laughing, he said, "Boy, don't be afraid. It's just that this old one hasn't seen anyone from the Supernatural Special Operations Bureau in a long time."

"Yes, I understand, sir. If you have any instructions, just let me know."

Yuan Mu suppressed his emotions, trying to keep his voice as calm as possible.

"Indeed, boy, this old one does have a matter I'd like you to handle. It shouldn't be too difficult for you, right?"

"Sir, what are you saying? It's an honor to do things for you. How could I find it difficult? Just tell me what you want me to do."

Yuan Mu knew the principle that one must bow their head under the eaves. Sometimes, being stubborn was useless.

Living was the most important thing.

The old man pondered for a moment, then said, "Actually, this matter isn't too difficult. It's just that I want you to help me take something out and give it to an old friend of mine."

"What is it?"

Yuan Mu asked quickly.

As soon as the words left his mouth, a surge of black mist appeared, and a wooden box quickly materialized in front of Yuan Mu.

The wooden box wasn't large, but it felt rather delicate and ancient. It was clear that it wasn't an ordinary box.

"Take this thing to an old friend of mine. Of course, I'm not asking you to do this for nothing. This Ghost Mist Forest is extremely complex. It's basically impossible for you to walk out of here alive on your own. This old one can send you out. What do you say?"

Hearing this, Yuan Mu immediately expressed his gratitude.

"Sir, with those words, I can rest assured. Tell me, who am I delivering this to?"

Yuan Mu said quickly.

At this moment, the old man whispered a few words in Yuan Mu's ear. Yuan Mu's expression changed slightly after hearing them, but he still said, "Don't worry, sir, I'll definitely deliver it."

"Good, my young friend. This old one appreciates your hard work. However, there's something I must remind you of."

The old man said calmly.

Hearing this, Yuan Mu quickly said, "Sir, please speak."

"This wooden box of mine is covered in black mist. If you open it rashly, the black mist will enter your body, and you will surely die. So, please be careful, my young friend."

Yuan Mu was secretly alarmed, not expecting the old man to have left such a measure.

Of course, Yuan Mu was somewhat curious about the contents of the wooden box, but he wouldn't risk opening it, as it wasn't worth it.

The most important thing now was to leave this place alive.

"Don't worry, sir, I definitely won't open it."

"Good, I believe you are a trustworthy person, my young friend. In that case, this old one will send you out now."

"Thank you, sir."

Yuan Mu said politely.

As soon as Yuan Mu finished speaking, the black mist that had been enveloping Yuan Mu suddenly surged, and Yuan Mu's body quickly transformed into a streak of black light. When he landed again, he found himself outside the Ghost Mist Forest.

Of course, this outside wasn't the area where Yuan Mu had initially entered the Ghost Mist Forest.

Confirming that there was no danger around, Yuan Mu breathed a sigh of relief. This time, he should be completely safe.

Yuan Mu didn't delay and quickly activated Ling Bo Wei Bu (nimble steps), quickly leaving this place.

He ran forward for a long time. Eventually, another town appeared ahead. Upon approaching, he discovered it was a small town, also quite desolate. However, after struggling inside for so many days, Yuan Mu was truly exhausted.

Moreover, his phone was now dead.

Yuan Mu explored the town and found no living people, nor any evil ghosts.

It was completely abandoned, and the Yin Qi (ghostly energy) was quite heavy. Such a place was actually perfect for Yuan Mu and Yuan Xiaoyao to stay.

What made Yuan Mu somewhat curious was that Yuan Xiaoyao hadn't awakened even after so many days.

How much black Qi (energy) had she absorbed in the Ghost Mist Forest?

If she hadn't absorbed so much black Qi, how could she still not have digested it all?

The person whom the old man inside had asked Yuan Mu to deliver the wooden box to wasn't so easy to find, so Yuan Mu wasn't too worried about that matter.

For now, he should ask the system how to improve his ghost body cultivation with the Yin Grasses he had obtained.

Yuan Mu sat down cross-legged, and his consciousness quickly entered the system.

He didn't waste any time and immediately asked the system about these matters. The system listened to Yuan Mu's words.

It directly said, "Host, the purpose of these Yin Grasses is for you to refine pills, specifically a type of pill called Ghost Pill. It can help you condense Yin Qi and increase the level of your ghost body."

"Refine pills?"

"That's right."

"Then what preparations are needed for refining pills?"

Yuan Mu asked quickly.

"First, you need a pill furnace. Second, you need a pill formula. I can give you the pill formula, but you'll need to find the pill furnace yourself."

"What kind of pill furnace will do?" Yuan Mu said.

"That requires the host to experiment on their own. In any case, something sturdy will work."

After answering Yuan Mu's questions, the system fell into a deep sleep, no longer making any sound.

Seeing this, Yuan Mu didn't continue to ask.

That's just how it is, and he would have to rely on himself next.

Since he needed something sturdy for refining pills, could he use a pressure cooker?

That thing was definitely sturdy.

With that thought, Yuan Mu didn't delay and quickly began to wander around nearby. Although there were no living people in this place, many living supplies had been left behind.

Yuan Mu wandered around for a while and eventually found a pressure cooker.

After finding the pressure cooker, Yuan Mu began to sit cross-legged, placing the three types of Yin Grasses into it. Then, he released his aura to forge these Yin Grasses.

Refining these Yin Grasses still required a lot of effort.

The entire process lasted about ten hours before a strange fragrance gradually permeated from the pressure cooker.

Moreover, this strange fragrance was very pleasant to smell.

At this time, Yuan Mu's forehead was covered in dense beads of sweat, showing that refining pills wasn't an easy task.

Finally, with the sound of the pressure cooker popping open, five pills instantly fell into Yuan Mu's hands. The pills he had just grabbed were still a little hot.

And Yuan Mu clearly felt that the Yin Qi in these pills was very heavy, giving off a strange feeling…

However, pills with such heavy Yin Qi were perfect for Yuan Mu to refine his ghost body.

Just as Yuan Mu was thinking this, he suddenly heard a faint voice in his ear, "Brother…"