Weibo has been the most popular communicational tool. People use it to scan news and a lot of them like to make comments about the hot issues. Especially when the negative information has been delivered, people will criticize the people who did the bad things at first, but as more details has been exposed later, people start to change their opinions. So I always wonder about the public's value conception, as they change their opinions so quickly, which seems that they can't make their own judgment, and the media affect their decision all the time. So it is important to let the teenagers learn what is right and wrong, or they will follow the crowd easily.