The crucial point was that the vital energy within the blood pool had been extracted from thousands of powerful cultivators. Even if those experts were to enter and absorb it themselves, it would be impossible for them to drain it all in a short time.
Just as the Black Protector finished speaking, the coffin gave a jolt. Though the vibration was slight, the wave of energy it released caused the vital energy of every martial artist throughout the entire prison to surge upward.
The Black Protector knew at once that the Immortal Lord was enraged.
Chapter 1029