The install file for mac is in the attachment.
the feather of QQ:
1. basically , we can chat instantly.
2. we can use voice or camera to chat.
3. we can send file to each other.
4. we can setup a group to chat together.
QQ is the most popular tool for instant chatting in China. When you install it ,you can chose English version. and you also need to register an account for it. it's free.
My QQ number is : 360460502. welcome to add me as your friend.