AIGC has two important application directions in terms of information content: one is to transform information into each other in different forms. Text, pictures and videos are mutually transformed, which are suitable for different usage scenarios and aesthetic preferences. Gamma is an excellent example. The second is the refining, compression and reorganization of information content. Perplexity is a representative. In fact, perplexity has changed the structure of search information. The change in the information structure is a huge event. The information results have undergone several major changes. The distribution is Google search, Facebook's newsfeed, twitter and TikTok's video feed.