敷衍表示
[fū yăn biăo shì]
The name "perfunctory expression" signifies someone who does not put a lot of emotion or thought into responding to others' words or actions. It indicates a certain detachment, disengagement or nonchalance. However, there can also be irony in such a username choice - it's possible that this person may often express deeply felt views but chooses a sarcastic nickname to avoid seeming too earnest or vulnerable