The two catastrophes Gu Zheng mentioned about the lava skeletons, one was when their skeletons became like red-hot iron pillars, Gu Zheng returned them to normal through the test of the lava frogs, and the other was when they fainted, Gu Zheng was finished The test of the Lava Mirage Dragon. Both tests made the Lava Skeleton stronger, but to what extent Gu Zheng himself had no way of knowing. After all, he did not take action against the Lava Skeleton. He just wanted to wait for the Lava Skeleton to show up. The strength shown when facing the enemy (remember the website address: www.hlnovel.com