Xiaoshanhe Institute.
Deep within a cave more than a thousand meters underground from Xiao Yi's courtyard residence.
This was a secret chamber specifically constructed by the Shadow Demon at Xiao Yi's behest, used for his usual cultivation retreats.
Here, Xiao Yi had set up a Spirit Gathering Array that amplified the gathering of spiritual essence by thirty times. The abundant and rich spiritual energy of heaven and earth condensed into dazzling and bright transparent crystals, emitting a faint blue glow that contained an incomparably pure energy.
With every breath he took, the spiritual energy of heaven and earth flowed into his body.
Even a person on the brink of death from prolonged illness could see an improvement in their condition and extend their lifespan by several years after staying here for ten days to half a month.
At this moment.
Xiao Yi sat cross-legged in the center of the chamber, maintaining a posture with his five hearts facing the sky.
