The word Big Brother is a kind of honorific title in China culture. Usually, the title of big brother is used to show respect or admiration, especially in family, society and workplace. In some brotherly relationships, eldest brother means that you are the leader of this group or the most prestigious person. Therefore, in China society, being called Big Brother is a manifestation of status, status and prestige.

Big brother has a very special meaning in the underworld. In China's underworld, eldest brother is the leader of the gang organization, usually a very strong person with firm beliefs. Eldest brother's position in the underworld is often not achieved through high education, birth and achievement, but through strength, wealth and power. They are often regarded as symbols of underworld forces, and their authority and actions determine the development of the whole underworld organization.

In addition to the above meanings, eldest brother may also be a kind name for elders or older people by ordinary people. In some parent-child relationships, friend relationships and social interactions, the title of big brother can also be an intimate and warm expression. Especially in families and communities, respecting the elderly and loving the young is the traditional virtue of the Chinese nation, and the title of big brother has also become a manifestation of our respect for the elderly and filial piety to our parents.