Avatar refers to portraits above the shoulders and pictures showing a person's personality, tastes, preferences and so on. It is also called avatar on online websites such as QQ, YY, Post Bar, Weibo and WeChat.
Surname is a sign and symbol of a person's family blood relationship. Descendants from the same ancestor are called clans. Surnames originate from the names of tribes or tribal leaders.
Its main function is to distinguish the descendants of different clans in the tribe and facilitate intermarriage between different clans.
Therefore, the appearance of surnames marks the change from group marriage system to consanguineous marriage system, which is an important milestone in the progress of human civilization. Since ancient times, Chinese descendants have used surnames as a symbol of family continuity.