Downloading apps from App Store is very slow in China and sometimes you can't even open App Store successfully. It's not Apple's fault (but Apple should do something to solve it). The real cause is the gov and GFW. Many developers use XunLei(Thunder, a p2p downloading tool) to accelerate downloading. I used it too when I was in Shanghai China. After I moved to Hong Kong, I always download directly from App Store and the downloading speed is about 5MB/s.