Im in mainland China, I have to get VPN to make Google play store work.

Just trying to find some alternative. 

ah... thanks for the info and I use expressVPN actually, the pricyiest but the fastest I have known

Oh. First time I knew that Google Play isn't available in China. Some alternative sites that you can download Android applications are apktovi or topapkdownload. I've downloaded apps several times, no problems occur.