Speaking of Xiaonei, whether high school or college students, you are probably quite familiar with it, right? But I was a bit shocked spiritually when I heard that "Xiaonei" would be renamed as "Renren.com". Judging from the name, "Xiaonei" is meant to be a bridge for schoolmates who have parted because of going to university or getting jobs. However, if it's changed to "Renren", I feel that the meaning changes a little. Then, what's the difference between it and those other sites like "Kaixin" and "Huanlewo"?