C487 A Terrifying Black Flame!

When Lin Hann saw this scene, he also understood Ye Guangyuan and Lyi Yuluo's plan very easily. However, there were still a lot of doubts in his heart. He asked in confusion, "Yan, I still don't quite understand. Since this improved version of the 'Ice Sealed Ball' is so powerful, why didn't Ye Guangyuan and Lyi Yuluo use it before? Logically speaking