The Chinese Pagoda building was the first ltb Gree released when they started regular cycles of them. It is one of only two, possibly three, type A ltbs released. It's got the best collection cycle in the game. And at the time of its release, it was expensive.
Pagoda was released well over a year ago. By today's standards, it's relatively cheap. So if today, you still don't have them bad boys at level ten, you're clearly doing something wrong. You should delete them. Return them to the Gree gods.
Basically, all I'm trying to say is, Pagoda good.