C501 Stepping into the Serene Stage!

Prof. Tian opened the piece of parchment!

Suddenly, a map appeared on the parchment!

"Is this Cloud Swamp?" Old Mr. Cheng asked in surprise.

"That's right! It's the Cloud Swamp!" Prof. Tian said affirmatively.

"In that case, there must be something strange in the Cloud Swamp! It seems like we really have to go there!" Xing Mo said with a serious expression