A pre-departure celebration! Su Qingyan's suggestion.

What's more, he was about to head to the Blood River Frontline and urgently needed to arm himself.

Using Alchemy to exchange for the resources in the Mu Family's hands was the optimal choice at the moment.

The Storage Pouch Mu Wanrou handed over was heavy, and the various Materials inside, combined, were worth at least one hundred thousand Spirit Stones.

Helping her refine a few furnaces of poyuan pill was a guaranteed profit.

Time was pressing, Lin Yuan no longer hesitated, and with a thought, he was about to take out his Pill Furnace.

However, before his hand could even lift, a intoxicating fragrant breeze had already rushed into his embrace.

Mu Wanrou's soft and breathtakingly curvaceous body pressed against him perfectly.

"Wait..."

Her voice carried an imperceptible tremor, her breath like orchids, making Lin Yuan's earlobes tingle slightly.

"We can refine the poyuan pill directly..." Lin Yuan said.

"What do you mean?" Mu Wanrou was stunned, confusion flashing in her beautiful eyes. "You said before that a Secret Technique was needed to increase the success rate. Were you... lying to me?"

"That's not it..." Lin Yuan quickly explained, feeling the astonishing softness and elasticity in his arms, secretly sighing that this enchantress was truly a born temptress.

Mu Wanrou's cheeks instantly flushed a captivating crimson, her rippling eyes gazed fixedly at him, her voice as low as a mosquito's buzz, yet carrying an irresistible charm.

"Since it's not... then... let's still increase the success rate before refining..."

...One day and one night later, Lin Yuan returned to Wind Listening Cliff, riding his Escape Light.

The Alchemy session under the waterfall not only yielded him a large amount of Materials but also a good number of attribute points.

However, as soon as he thought of the Blood River Frontline he was about to depart for, his eyes became solemn.

That place was a meat grinder where Nascent Soul Old Monsters were stationed, and even Core Formation Cultivators could fall at any time. As a Foundation Establishment Cultivator, he had to be extremely careful.

As soon as he entered the door, he saw two stunning figures inside the Immortal Cave, whispering to each other.

Today, Su Qingyan wore an extremely form-fitting purple short skirt, which made her already snow-white skin appear even more radiant.

Her uncovered, long, and shapely legs exuded a breathtaking charm.

In just a short time, her aura had undergone a drastic change.

She was no longer the Qi Refining Stage woman she once was, but a genuine Foundation Establishment Cultivator with a stable aura.

Seeing Lin Yuan return, her face first showed a captivating joy, which then turned into deep concern.

"Sister Shuang'er said you're going to the Blood River Frontline?"

Lin Yuan nodded, his gaze carefully sweeping over her, and he sincerely praised, "Not bad, congratulations on successfully achieving Foundation Establishment. Your Foundation is very stable, it should be Heavenly Dao Foundation Establishment."

"If it weren't for you, I wouldn't be where I am today." Su Qingyan's eyes flickered with profound gratitude. "In this life, I never even dared to dream that I could not only achieve Foundation Establishment, but also... Heavenly Dao Foundation Establishment."

She felt that she was incredibly lucky.

Initially, she was just a female Cultivator with low Aptitude. To survive in the Yin Corpse Sect, she had no choice but to rely on Wei He, enduring a life of constant abuse and darkness.

It was to seek revenge that she became involved with Lin Yuan.

Who would have thought that this would be the greatest and most correct Opportunity of her life?

Not only did she receive a powerful Legacy she never dared to imagine, but with Lin Yuan's continuous support of Medicinal Pills, she had now achieved the Heavenly Dao Foundation Establishment, which countless Cultivators dreamed of. In the future, condensing a Golden Core was no longer an unattainable luxury.

"I've already opened an Immortal Cave, not far from yours." Su Qingyan's eyes were like silk, and she took a step forward, gently pulling Lin Yuan's sleeve with a nearly coquettish tone, her soft body subtly brushing against him.

"You're leaving tomorrow, and the journey ahead is fraught with unknown dangers. Why don't you come to my Immortal Cave today? Firstly, to thank you, and secondly, to see you off."

Lin Yuan pondered for a moment. He was leaving tomorrow, and the remaining time was indeed not enough for him to calmly refine a complex set of Magical Artifacts.

It might as well be better to go to Su Qingyan's place and say a proper farewell.

After all, this trip to the frontline was full of dangers, and he didn't know when he would return.

"That would be excellent."

"Sister Shuang'er, you come along too." Su Qingyan turned her head and smiled charmingly at Han Shuang, who was standing beside her.

Su Qingyan's Immortal Cave was on the mountainside of Hundred Herbs Peak. The Spiritual Qi concentration was far less than Lin Yuan's Wind Listening Cliff, and the expandable area was also much smaller.

However, the Immortal Cave was decorated with extreme elegance, reflecting a woman's delicate touch everywhere.

"Your Immortal Cave is quite nice, but this layout, why does it look somewhat familiar to me?" Lin Yuan looked around, teasing with a smile.

Su Qingyan smiled gracefully, full of charm, "More than just familiar, I practically modeled it after your Immortal Cave's layout, only the decorative style is different."

"And..."

She blinked her eyes, giving a meaningful glance at Han Shuang, who was following closely behind her.

"Here, it's the same."

Saying this, she led the two into the bedroom and gently pressed on a landscape painting hanging on the wall.

"Click, click, click..."

A faint sound of machinery came, and a stone door slowly opened in the wall, revealing a winding, deep staircase leading downwards.

Han Shuang's pretty face instantly flushed crimson.

The underground secret room in Lin Yuan's Immortal Cave was built by her own hands, brick by brick. She was all too familiar with what it was used for.

Although she had known about Lin Yuan and Su Qingyan's relationship in the past, she would always consciously and discreetly avoid them.

But this time, Su Qingyan clearly had no intention of letting her avoid them.

"Come in with me and have a look." Su Qingyan took Lin Yuan's hand and walked in first, her posture as natural as if inviting him to visit her garden.

This secret room was a bit smaller than Lin Yuan's, but it was decorated more warmly and enchantingly.

On a wide, soft jade bed, light purple gauze curtains hung halfway, and several fist-sized moonstones were embedded in the ceiling, casting a hazy and soft glow. The air was filled with a sweet fragrance that could make one's bones tingle, and in the corner's incense burner, some kind of aphrodisiac incense was burning.

"Um... I'll go prepare some food for Young Master and Sister Qingyan."

Han Shuang's face was red, her heart pounding, and she turned to slip away.

As Lin Yuan's personal maid, she knew very well when to do what.

"Sister Shuang'er, stay."

Su Qingyan, however, grabbed her wrist, her breath like orchids, her voice carrying an irresistible gentleness.

Han Shuang's delicate body trembled, and she instinctively looked at Lin Yuan, only to see him quietly watching her, his eyes deep, offering no objection.

This gaze instantly made her heart pound uncontrollably, her cheeks burned intensely, and even her breathing became cautious.

Su Qingyan pulled her to sit by the bed and said softly, "He's going to the Blood River Frontline, and who knows how many dangers he'll face. We can't help much. We are sisters, don't you want to do your part for Young Master?"

...Time slowly passed. The next day, at noon.

The gentle sunlight streamed through the window lattice, falling on Su Qingyan and Han Shuang's cheeks.

The two leaned against each other, watching the familiar figure transform into a stream of light and disappear into the horizon, their eyes filled with an unresolvable reluctance.

"For the foreseeable future, we sisters will have to support each other." Su Qingyan sighed softly.

Han Shuang nodded heavily, her eyes gleaming with unprecedented determination.

"Sister Qingyan, how about... I move in with you? It would be good to have someone to look after each other daily."