To be honest, seeing the terrifying tribulation clouds across which blood-colored lightning snakes constantly slithered, even Yun Feng could not help but feel a chill of dread in his heart.
A blood-colored heavenly tribulation was legendary for having a success rate of only one in ten thousand—and that was during the era when spiritual energy was abundant!
Given the present conditions, it was practically a situation of absolute death with no hope of survival!
Chapter 651