What does it mean "to lose a face" for people from the East (China, Japan, ect.etc.) ?

Can you get give an exаmples, please?

The idea involves public shame or embarrassment, either due to a person's failure to accomplish something, especially in comparison to others, or something inadvertent. Slipping and falling in the street, thereby soiling clothing, would be inadvertent. Failing an exam that classmates all passed would cause loss of face. In later years, lacking material possessions (house, car, clothing, smartphone) compared to peers would cause loss of face. Loss of face by members of one's family could affect an individual, such as a child receiving C- on a test when the children of friends performed much better.