At the same time, with a flash of a light shadow, the young man flew ten thousand Chinese feet high out of thin air. Beside him, the woman with a surname of Lü was frowning slightly, and she hung her head low to examine the Thunder Emperor Mountain, which was now below them. With her eyes glowing slightly, the woman with a surname of Lü pointed her finger toward the Thunder Emperor Mountain casually. At once, with a booming thunder, the Thunder Emperor Mountain, which had existed for an unknown number of years, was completely destroyed into bean-like pieces! After that, the woman with a surname of Lü waved her wide sleeves, and the bean-like pieces were dispersed. A lump of numerous and dense blood red threads was then revealed! They had come out from underground, and they were passing through the dust to head toward the both of them. The green-clothed woman flicked out a finger casually. The lump of blood-colored threads then exploded on the spot, and became nose-piercing bloody energy. The young man had escaped narrowly from death. However, the extreme pain within his body was still present, and he could not help but say with fright: "Auntie, what is that?" The green-clothed woman thought to herself and looked toward the direction of the Corpse Grassland: "It is probably the emergence of an evil being which was sound asleep. Moreover, it is extremely strong. Since my abilities are suppressed, I am probably not its opponent! Let's go to the stone forest. If Aoyue is still alive, she will know where to go." … Back to Su Yu… After training for three whole days and nights, Su Yu finally mastered Thunder Escape and Great Thunder Heart Technique. On the books, there were experiences of the Thunder Emperor's training. Hence, Su Yu only needed to add on a bit of comprehension, and he would be able to cultivate the techniques successfully. Su Yu was delighted. However, he did not leave, but instead took out the Dry Cloud Five Elemental Formation again. The five balls were floating in order in front of Su Yu.