He was pretty happy when he found out I'd been training.

[Especially since it was hard to nag her into doing anything she didn't want to do. Bulla inherited her parents' stubbornness in spades.]

And he did support me protecting others by pushing me to get better with my ki.

[She'd offered to share her ki with others as an experiment some time ago, and though he thought that was a silly idea, he emphasized that she'd be able to do more to protect people by mastering her ki herself.]