"The teacher is inside, Mr. Xiao. Let's go in."
Cao Ying looked at Lu Yunxiao and spoke softly.
Lu Yunxiao nodded and exchanged a glance with Qing Yanjing. A faint glimmer flashed through both their eyes.
After speaking, Cao Ying appraised Lu Yunxiao once more, stepped forward, and slowly pushed open the hall doors.
Lu Yunxiao shifted his feet and slowly stepped inside...
The great hall was filled with bookshelves, giving it a somewhat cluttered appearance. Flames of many different colors spread throughout the hall, their multicolored radiance intertwining and creating a dreamlike, hazy feeling.
Lu Yunxiao's footsteps landed softly upon the stone floor. His gaze swept around before finally stopping at a bookshelf. There, an old man dressed in white was carefully dusting the shelves.
Not a trace of aura leaked from the old man in white. He looked like nothing more than an utterly ordinary old man.
Yet Lu Yunxiao's astonishing soul perception told him that beneath that ordinary exterior lay an immensely vast and terrifying cultivation.
From this old man, Lu Yunxiao felt pressure for the first time in a long while.
This old man's strength might even surpass his own at present.
"Master!"
Seeing the old man in white, Cao Ying bowed, her expression exceptionally respectful.
This man was Cao Ying's Master, the foremost of the Pill Tower Three Giants, Xuan Kongzi, an Eight Revolutions Dou Zun Peak.
He was also one of the most influential figures in the Pill Tower on the surface.
Hearing her voice, the old man in white stopped what he was doing and slowly turned around.
The old man's hair and beard were both white, and deep wrinkles covered his face. His eyes appeared narrow beneath those overlapping wrinkles, yet they were as unfathomable as a deep, secluded pool.
He narrowed