"This is the Bone Forging Pool. It will be excruciating once you're inside. The longer you stay, the better the effects will be. If you pass out, the effects will cease immediately. You must remain conscious for it to work. Remember, you only have one chance, so think it through carefully!" Qing Piaoyun was very serious. This was no ordinary test or common reward.
If you pass out during the absorption process, it means you've ended the session prematurely. In other words, if you faint right after getting in, it's over. You'll have completely wasted your one chance.
The Bone Forging Pool requires a person to be awake to absorb its essence, and it must be done proactively; just soaking in it is completely useless. Therefore, if you pass out, you can no longer absorb it. This means the opportunity is wasted, as returning in the future will have no effect whatsoever.
