Immortality: Starting with a grave, I'm invincible when burying corpses.

In the 44th year of the Tianshun reign, at the Mu residence, in the study.

Tens of thousands of books were carelessly thrown on the floor. The entire study was crammed with books, making it difficult to even find a place to step.

Mu An sat expressionlessly in a chair by the window, staring blankly at the sky outside.

At his feet were bottles and jars, each containing pills of varying sizes.

These pills are mostly red and blue, exuding a wild aura.

"Knock knock knock!"

With rhythmic knocking, the half-closed door was slowly pushed open.

Ao Yun, now in human form, peeked out. Her face was slightly pale, and she looked at Mu An with a complex mix of anticipation and conflict.

"Boss, I've drained several dozen kilograms of blood, and we've also captured quite a few cult members. Are you going to study them now?"

At the window, Mu An turned her head and shook her head at Ao Yun.

"No need. These past five years have been tough on you. There's no need to continue the research."

Upon hearing this, Ao Yun showed an expression that was hard to tell whether she was excited or disappointed. She hesitated for a while before finally speaking.

"Are you really not going to use it?"

Glancing at Ao Yun, who seemed to have turned into a masochist due to years of blood and flesh donations, Mu An also felt that he was really going crazy now, doing increasingly insane things. He sighed slightly.

"It has failed. Thank you for your help over the past five years... I'm giving you all the spiritual creatures I accelerated on Mount Qi as compensation. If that's not enough, I'll cultivate more in the future. If there's an opportunity in the future, I'll help you take on the Heavenly Fruit position."

Having grown accustomed to Mu An asking her for flesh and blood, Ao Yun was suddenly overwhelmed by these words and the gentle treatment she received. She thought she was dreaming.

She patted her face several times with her outstretched hand until her cheeks turned bright red before nodding.

Yes, it hurts a lot, it's not a dream!

With mixed feelings, Ao Yun cautiously asked Mu An, "Are you going to give me all of these hundred-plus plants? Isn't that a bit much?"

She automatically ignored the second half of Mu An's sentence, focusing only on the more realistic reward.

Mu An did not answer immediately, but stared out the window in a daze.

In the courtyard, Xiao He and Xiao Lü, who looked much older than they had five years ago, were resting under a tree, with several maids waiting by their side, ready to serve them at any time.

Compared to before, they now enjoy daydreaming more and more, often sitting in one place for an entire afternoon, and they don't even realize they've fallen asleep.

After staring at the two of them for a while, Mu An finally spoke.

"These tangible but intangible spiritual objects are of no use other than a little spiritual energy. Only Ao Yun in the manor can digest spiritual energy, so you can take them all. It can also make up for the damage to your foundation over the past few years."

Seeing that Mu An really didn't care about those spiritual objects, Ao Yun happily agreed.

She counted on her fingers in her mind: one plant every ten days, more than a hundred plants would be enough for her to eat for several years!

Her dragon life had no other hobbies but eating, drinking, and playing exciting games with all sorts of creatures.

It's just that Ao Yun is timid and afraid of being cleaved in two by Mu An's sword; otherwise, she would have invited Mu An to create a little dragon together.

The dragon race has simple desires; they like to leave their seed everywhere, and they are bisexual. Even female dragons can impregnate other creatures.

Although most of the time they cannot produce offspring, as long as the population is large enough, some strange and unusual dragon descendants will always be born.

Ao Yun felt that everything about this boss was good to her; he was incredibly skilled in combat, possessed all sorts of mysterious and unpredictable supernatural abilities, and she didn't feel uncomfortable being around him.

But just like an ordinary person, he is particularly concerned about those boring emotions, and keeps trying to defy heaven and earth to keep those few ordinary people with him.

How strange! Wouldn't it be better to use this free time to make a baby dragon with her?

If she's the eldest, she could certainly take charge of creating the baby dragons herself.

Forget it, there are plenty of creatures willing to play with her anyway, so it doesn't matter if she has one more. Ao Yun has never been picky about food!

As Ao Yun was imagining all sorts of dangerous scenarios, Mu An suddenly spoke up, interrupting her reverie.

"I'm going to Mount Sixiang. While I'm gone, you must protect the mansion."

Upon hearing about the mission, Ao Yun's eyes immediately sharpened, and she patted her chest to assure Mu An.

"Don't worry, boss! With me here, there won't be any problems."

……

Four Symbols Mountain, Celestial Master's Mansion.

Having lived in this world for seventy-two years, Mu An met the strongest being in this world for the first time.

The True Lord of the Daoist Unity – the Old Celestial Master Li Xuan.

The name of the Old Celestial Master was very familiar to Yu Mu'an. He had heard countless stories and legends related to the Old Celestial Master.

He also received gifts from the old Celestial Master on two separate occasions and was told that he could join the Celestial Master's Mansion at any time.

More than forty years ago, Princess Yongning even invited an old celestial master to oversee the succession, ensuring that she did not encounter any top experts to obstruct her path to the throne.

Judging from these points alone, Mu An and the Old Celestial Master seem to have a strong connection, and the two have formed a considerable bond of goodwill.

But later, on the day the Book of Creation was opened, Mu An unexpectedly discovered something amiss and glimpsed some of the Old Celestial Master's secrets.

Although the truth was unclear and the matter was still vague, Mu An was certain that the old master's ambitions were terrifying, far beyond what anyone else could compare to.

Mu An had no intention of opposing this supreme being of the Nine Realms, nor did he want to be constantly monitored by the Old Celestial Master.

So he simply suppressed the Yin-Yang Bagua Mirror that the Celestial Master had lent him.

The old celestial master didn't seem to care about the matter, and while having Zhang Ming'an retrieve the Yin-Yang Eight Trigrams Mirror, he also sent three longevity-promoting herbs.

Originally, Mu An thought that he would not have any contact with the old Celestial Master again for one or two hundred years, but he never expected that their first meeting would come so hastily.

Sun and Moon Lake.

A small boat made entirely of white jade floats on the lake, where the number one in the world and the number seven in the world sit facing each other, sipping cloud and mist spirit tea picked from a mountain ten thousand meters high.

"I already know what you seek, fellow Daoist."

"I have tried thousands of methods to prolong my life, but the heavens and earth do not allow it, and none of them have worked. If you have any feasible methods, please teach me."

Mu An was sincere and did not mention the old master's plans at all. He only discussed the matter of prolonging life with the old master.

Although he didn't say it explicitly, the old master naturally understood what he meant.

If there is a way to prolong life, thanks to this good fortune, he will not interfere with the Old Celestial Master's future plans.

The old master's expression remained unchanged; he simply waved his hand over the lake beneath him, creating a curtain of water.

The flowing water outlines a map simulating the Nine Realms.

Eight continents and six oceans are all displayed in the water curtain.

"There are two Qilin in the world, one Thunder and one Wind, who can live for eight thousand years. These two are the ultimate in lifespan in the Nine Realms."

The dragons of the Nine Realms have long lifespans. If they become true dragons, they can live for three thousand years. If they inherit the fruit of heaven and earth, they can live for five thousand years, far surpassing ordinary living beings.

Every loss has its gain. We humans, though wise and virtuous, are uniquely gifted in cultivation and can receive the mandate of heaven, yet our lifespan is limited to no more than three thousand years. This is the limit for humanity.

As the whisk swept across the water, the scene in the mirror began to change, flashing across scenes of the world, all of which were happening in the Nine Realms at that moment.

To observe the world from one place.

The incredible methods surprised even Mu An, giving him a new understanding of the old master's power.

Putting everything else aside, he can't do this one thing right now.