What role does uncle play in China traditional society?

Traditional families in China often adopt children because of their high mortality rate. Adopting an unsuccessful person is a very serious problem. When families are separated, how to distribute property is a big problem.

All men in the paternal family are potential property competitors, which is the key.

My uncle is an outsider who is related by blood but has no property rights. He broke away from his paternal family.

Therefore, for nephew, uncle is the most trusted natural agent and protector and the most reliable foreign aid for nephew.