The stone door closed behind him, and the temperature inside the cave abruptly rose. Scorching waves of air struck Yun Che in the face, heating his cheeks.
After barely a dozen steps, the space before him suddenly opened up into an underground cavern a hundred zhang across. At its very center lay a churning pool of golden liquid. Dense white immortal mist roiled above it, and the burbling sound came from its surging waters.
Quite a few skeletons lay scattered around the pool, every bone giving off a faint golden sheen. Presumably, they belonged to cultivators who had entered before, failed to withstand the pool's power, and ultimately died here.
Yun Che walked to the edge and looked down. Countless tiny golden motes churned through the water. Those motes were sun moon dragon qi of the utmost purity. This was a precious bone-tempering site formed by the founding patriarch of the Divine Prison Immortal Sect, who had drawn together underground spirit veins. He had never expected it to actually exist.
He clenched his fists, feeling the immortal bones inside his body grow hot, as though instinctively calling out to this dragon qi. Clearly, having just broken through to the third turn realm, he needed exactly such a place to refine his foundation.
Without hesitation, Yun Che stripped off his outer clothes and stepped into the pool wearing only his underpants.
The moment his foot entered, searing power shot up his calves like countless red-hot knives scraping his bones. The pain made him suck in a sharp breath. Gritting his teeth, he slowly walked toward the center.
At the center, the scalding liquid reached just up to his chest. Dragon qi frantically drilled into his body through his pores, constantly circulating along the patterns of his immortal bones. With every circuit,