The two of them walked shoulder to shoulder into the Yin-Yang Cave, stepping toward the dense yet tranquil Yin-Yang Two Energies.
Facing the Profound Yin Energy ahead, Li Qing's body paused slightly. He actually felt as though his entire body had sunk into a mire.
Then, he suddenly discovered that even the abundant true essence within his body seemed to have frozen solid, unable to circulate normally at all!
"So this is the Yin-Yang Two Energies. No wonder one needs at least Core Formation cultivation to enter."
Li Qing couldn't help muttering under his breath, deeply shaken by this Yin-Yang Cave.
He couldn't help turning his head to take a look at Shen Ningbing, only to find that her expression had tightened slightly, though she was nowhere near as grave as he was.
Sure enough, this was the Core Formation Realm.
The true essence within one's body had solidified and condensed into a Golden Core; the pressure brought by the Yin-Yang Cave was nothing serious at all.
"Senior Brother, it seems your guess was right. The Yin-Yang Two Energies here have truly maintained their balance and have not erupted."
At this moment, Shen Ningbing's admiration for Li Qing rose another level. To think of Yin and Yang harmonizing with one another—how profound must his attainments in the Dao of Yin and Yang be?!
Hearing the admiration in his junior sister's voice, Li Qing couldn't help feeling waves of embarrassment.
How could this be his own brilliance? He had merely thought of the Taiji Yin-Yang Diagram from his previous life.
"A lone Yin does not give birth; a solitary Yang does not grow."
"Yin and Yang aid each other, and the world hails them as sovereign."
"This was not something I comprehended myself. I do not possess such talent—I merely happened