Hi,
Recently there appeared an app called Google installer, and it allows us to download all the Google apps.
Below is this app's apk file, please download it to your cell phone.
Google installer谷歌应用下载器
Here's a simple tutorial for installing it to your phone.
1. Find where you've downloaded the apk file
2. Choose the file, and the installation page will pop up
3. Click Install and the process may take a few seconds
4. Congratulations! The app has been installed in your phone successfully
Check out all the Google apps you can download now!