C205
Actually, the reason why Su Moyun knew that there was a cave at the bottom of this cliff was because she had observed it in a moment of panic.
However, due to the lack of time, she wasn't sure if there really would be one.
In the end, it was all due to luck, and the reason for the bet was Tuoba Jing and her being lucky enough.
After all, if they didn't bet on this