It's a formation tool that's in Chinese, for that version of the game. The developers have said they're working on an English version of said tool.

I have problems with my Earth character in this exam too. I've been using Neji, Kankuro and Kakashi. The team works for other modes more or less (I sometimes win in arena more than I used to with it), but ninja exam 50 just destroys me.

That's great! Too bad I don't have Gaara.. lol