The walls around were covered in mouths. The mouths opened, revealing rows of tightly shut white teeth.
Not only that, but these mouths were emitting strange laughter, making people shudder.
Fang Yuan patted Bai Ning Bing on the shoulder. "It's the effect of the Flesh Laugh Gu. Just like the Earth Treasury Flower, it's used to store Gu. No need to worry too much."
As he spoke, a mouth suddenly lost all its teeth, and a bright red tongue extended out.
The tongue curled forward, very long, over a meter in length.
After stretching out, the tip of the tongue unrolled from its curled state, revealing a book.
This was also a Bone Book.
But it was many times smaller than the previous Gray Bone Giant Book, quite pocket-sized, only half the size of an adult's palm.
Fang Yuan took it and examined it.
The general idea of the book was: "Since the successor has managed to reach this place, it proves they have a pure character and are worthy of inheriting the author's true legacy. The author has two identities, one known as the 'Gray Bone Genius', and the other as the 'Flesh Bone Master'. This Flesh Cavity Secret Pavilion houses many Gu. If the successor is fated, they may knock on any tooth at will. If lucky, the tooth will open, allowing them to retrieve the sleeping Gu inside."
"So, this is purely a test of luck," Fang Yuan understood upon reading this.
Bai Hua hadn't detailed this trial in his past life. Fang Yuan could only try blindly.
The first to succeed wasn't him, but Bai Ning Bing.
Bai Ning Bing curled her index finger and gently tapped the teeth. These teeth were like musical instruments; each knock produced a crisp, melodic sound.
She tapped randomly, and then the mouth's laughter abruptly stopped. All the teeth fell out, the big red tongue stuck out, revealing a Gu.
"What kind of Gu is this?" Seeing this Gu, Bai Ning Bing's face showed a mix of surprise and strangeness.
The Gu had an odd shape, like a set of dentures. Neat white teeth, upper and lower rows, perfectly aligned, emitting a pearlescent luster.
Fang Yuan looked at it, and joy spread across his face. "Good, it turns out to be the famous Rank Three healing Gu — Flesh and Bone!"
"Raise the dead, regrow the flesh and bone..." Bai Ning Bing murmured.
Among healing Gu of the Fourth Rank, the universally acknowledged best is the "Resurrecting Gu". Even if a Gu Master is dead, as long as it hasn't been more than seven hours and their body is intact, this Gu can be used to revive them.
However, this Gu is a rare treasure, extremely precious. It is also a single-use consumable, available only on the black market.
Flesh and Bone, on the other hand, is a Rank Three Gu, but it is not a consumable and can be used repeatedly.
It is often used in conjunction with the Resurrecting Gu.
If a Gu Master's corpse is incomplete, Flesh and Bone is used first to regenerate their flesh and blood. Then, the Resurrecting Gu is used to bring them back to life.
In history, such pairings were common. Many great figures benefited from this, including even Rank Nine Immortal Venerables and Demon Venerables.
This was the healing Gu Fang Yuan had been dreaming of.
Fang Yuan had been searching hard for so long, and his wish was finally fulfilled.
"Hehe, want it? You can trade me the Yang Gu for it," Bai Ning Bing said, holding the Gu in her hand, smiling smugly.
Fang Yuan snorted coldly. "Do you take me for an idiot?"
Bai Ning Bing's smile faded, her gaze turning icy. "If you give me the Yang Gu, we can cooperate honestly. Fang Yuan, I've followed you for so long, you should know my patience has limits. I no longer fear death. At worst, we'll die together."
"Of course you don't fear death, but do you think I would?" Fang Yuan sneered. He had long expected this situation, so he wasn't surprised.
Bai Ning Bing withdrew her gaze and studied the Flesh and Bone in her hand. The corner of her mouth curled into a smirk. "Perhaps killing you is also a good choice. Look at you. You're only at the First Rank, yet you can instantly refine Gu, and you also have the Heavenly Essence Treasure Lotus. Aside from that, if I kill you, I can at least take this inheritance for myself. Just thinking about it makes my heart race..."
Bai Ning Bing's words were full of threat.
"Take it for yourself? Hah, it seems you've forgotten about the Bai family right behind us. Maybe they are already walking up the stone steps outside the pavilion. Without me, do you even know how to proceed? This inheritance seems like a straight line on the surface, but it actually has many forks. I may not be able to beat you for now, but if you want to kill me and take the treasure, you're being too naive. Do you think I'll give you the chance to get the Yang Gu? If you don't believe me, you can try."
After saying this, Fang Yuan turned around and started knocking on the teeth.
Actually, after arriving here, he didn't know how to proceed either. There were no other passages in this secret pavilion.
Bai Ning Bing watched Fang Yuan completely expose his back to her, acting defenseless.
It seemed that if she just moved lightly, she could kill him.
But precisely because of this, Bai Ning Bing dared not act rashly.
Fang Yuan's words had struck a chord in her heart. Without Fang Yuan, how would she proceed next? Going back the way she came was definitely a dead end.
Bai Ning Bing narrowed her eyes. For a moment, she even wondered: was the pursuit of the Bai family also a setup by Fang Yuan? Creating external pressure to curb her own greed...