In building sand castles? It's been years since I've had the time.

[And admittedly even when he was a young child he didn't spend too much time on things like this. Qiqi, for all her child-like nature, has also never expressed an interest.

That doesn't mean he doesn't understand the principle but he knows full well that grasping the idea of something and then putting it into practice are two different things.]

I wouldn't want to ruin all your hard work. [He draws a little pattern in the sand by his knee with one fingertip.] But I wouldn't mind hearing more about this palace.