"If we can understand the mysteries of the thunderbolt, we will be able to master the origin of the thunderbolt. We can understand the character of the thunderbolt more clearly, and even eliminate all the calamities. In practice, it will be more smooth and disaster-free, but unfortunately, it is useless for us." Yi Yu sighed and went all the way. He didn't know how many crises and calamities he had experienced. The number of human and natural calamities was not large enough. It can be expected that when he broke through the impossible, there would be more dangerous calamities. But that level is far from what the mine tomb can...