Thunder! Shriek! Their sight was completely covered in blue. The face of Chen Mu, who was taking shelter inside the cave, changed. From the cave's entrance, he saw huge blue hailstones falling from the sky, one after another, hitting on the ground mercilessly like meteorites. He could feel quakes from the stones beneath him after every hit. Stone debris rained endlessly from the ceiling of the cave. Chen Mu could not hear anything besides the deafening sound of crashing.