Origin

The character 孫 combines two components to express the concept of a grandchild. The left side, 子, means child and is used as a classifier for people and descendants. The right side, 系, refers to a line or lineage. Together, they create the idea of a child within a family line—specifically one generation removed from the direct parent-child relationship, making it the word for grandchild. The visual structure thus shows how a grandchild represents both a child and a continuation of the family's generations.