With the emergence of the internet and social media, the idea of “a picture tells the truth” gave way to the age of posttruth. The socalled “truth” is dynamic. In the process of looking for it, thetruth can be reorganized and restated. Each restatement gets its place in making a part of the truth by playing a role in the evidence chain. In the age of posttruth, disagreement relating to the cognition of the truth is actually the disagreement of varying standpoints between different social groups on emotion and value.During their communication and interaction, different social groups may reach a limited consensus to settle their differences.

“a picture tells the fact”; “posttruth”; limited consensus