Year 246 of the Mortal Calendar, Spirit Emperor Garden in Fallen Devil Valley.
When Li Feiyu broke through to the Mid Nascent Soul stage, he had sucked the spiritual vein of Saint Devil Island dry.
Such minor realm breakthroughs were naturally not as perilous as major realm breakthroughs. The reason for the massive consumption was that cultivating the Five Emperors Spiritual Infant required an immense amount of spiritual power.
Chapter 305