C439 Underwater Cave
This lake was about fifteen meters deep, so it wasn't too outrageous. When they went down for the first time, Yue Yi and Soong Yao were both looking for a location. After all, this lake was so wide, so it would be difficult to find the target's entrance. Thus, the two of them split up and headed off in different directions to search.
Soong Yao was indeed not bragging