The children of my uncle's son call me uncle or aunt. If you are male, children should call you "uncle", if you are female, children should call you "aunt", but in daily life, you don't put "desk" in front, which makes you look different. Generally, they should be called "uncle" or "aunt" like relatives.

The meaning of "uncle": a kinship term. The son of a sibling of a grandparent or grandmother, who is younger than his father, is called "uncle", that is, his father's cousin.