Chu Xun stayed on Dragon's Back for more than a day because he needed to know more about the ancient war.

He told Emperor Ao the story about Wen Yuchen.

"Wen Yuchen will be a good helper, but he is now trapped in the Subterranean Devils Clan. I have gone to the Immortals but have not found the key."

However, Emperor Ao suddenly laughed.

"What are you laughing at?" Chu Xun was confused.

Emperor Ao smiled and was ...