YY, also known as the Voice of YY, is a chat platform similar to QQ, but YY is different from QQ. YY can not only type, but also talk, but not video.

If you have played CF, you will know that team games are hosted by YY. Just enter YY room and press F2 to make a call. YY room is somewhat similar to QQ group.

Landlord, you can download one and try it yourself. Many games use YY.