Thanks for your reply
Scouting in HK is similar to England, yet we have another type of badges, the instructor badges...like...if I teach another scout swimming, and he pass the swimmer badge in interest group, I get the swimmer instructor badge, it's just like that.
hmm...I think I have talked to my SL before (he's 26, he was still rover scout last year), and I always think that I am too young and have lots of time to do for badges, so he always add things after I finish one thing, perhaps to make the time for that badge longer. And i really don't like this, once I know much about that