What are the three major online media?

Internet is called the "fourth media" after the three traditional media: newspaper, radio and television. At present, can domestic online media be divided into three categories, one is the mainstream news media represented by Xinhuanet and People's Daily, and the other is the general (or neutral) news media represented by Phoenix. The third is the portal websites represented by Tencent, Sina and Netease. Compared with traditional media, this method should be similar to CCTV, Phoenix Satellite TV and Hunan Satellite TV.