Only after hearing the Divine Soul Emperor Dragon mentioning the other destructive energy did Ye Xiao remembered that after he endured the thunder tribulation for the first time, he felt two types of destructive energy within him.
After much difficulty, he managed to find out that one of those two types of destructive energy was the heavenly thunder while the second type of destructive energy that he was unable to see through made him terrified when he just felt it.
He let it go for the time being at that time and thought that when his strength will increase, he will look for that destructive energy once again.
But after that, he forgot about it. He even forgot that he had already refined the Heavenly Thunder and could use it in the fight against the giant immortal.
Now that the Divine Soul Emperor Dragon mentioned the destructive energy, Ye Xiao suddenly realized that he actually had forgotten about such powerful destructive support.
