"Yes, it is very dangerous." The Treasure-Seeking Mouse nodded. "What I sensed is an extremely vast area, yet it holds immensely powerful treasures. After discussing it with Jieli, we suspect that place is most likely a sea region."
"It's not strange for a sea region to exist within the Great Secret Realm, but since you can sense such grave danger, there are likely powerful sea beasts or other traps lurking within it," Song Nianchu mused, recalling some of the literature she had read about marine territories.
Aside from those two possibilities, there was also the Yin-Yang Sea.
Chapter 708