Xu Yuan understood Su Wan's motive. He hadn't intended to hide the information forever, anyway.
In the past, he was too lazy to tell her. He thought she might waste his time by demanding too many things. However, he now had a more efficient way to gain experience. He no longer relied on sleeping to gain experience points.
He was willing to reveal a little of his ability to gain her trust. "No problem!"
His answer was straightforward. He didn't even hesitate. Su Wan knew that her guess had been correct!
'Scammer Xu really has a powerful ability!' she thought.
Su Wan was a bit concerned about his offer of a buff to let her kill the Beastmen Tribe. However, she was excited to know what kind of buff it would be.
Xu Yuan had already applied the ability to her: the Demon Dragon Symbiosis.