Impression management is the process by which people try to control the impressions others form about themselves. The impression a person leaves on others indicates how others perceive, evaluate, and even shape other people's specific ways of coping with them. 
in order to leave a good impression on others and get good evaluation and treatment from others, people will express themselves in a way that creates a specific impression on others. The use of impression management, especially to avoid certain performance collapses, including unintentional movements, untimely intrusions, farce, etc.
Xu Heng saw people picking pears on the roadside to quench their thirst, and he was unmoved, saying, Although there is no owner of a pear, my heart has a owner.