When it comes to domestic social comment systems, we have to mention a few representative services such as Duosuo, Denglu, Youyan, Comments, NetEase Cloud Posts, and Sohu Changyan. A few years ago, when social comments became popular, the comment systems that came with programs such as WordPress were not used. Some embedded Weibo as website comments, and some used third-party services such as Duosuo, Denglu, and Youyan to replace comments. of.