| Chain | Term of address |
|---|---|
| Father's father | Grandpa (paternal) |
| Mother's mother | Maternal grandmother |
| Father's older brother | Uncle |
| Father's younger brother | Uncle |
| Father's older sister | Aunt |
| Mother's brothers | Uncle |
| Father's brother's son (older than you) | Elder male cousin (paternal) |
| Mother's brother's daughter (younger than you) | Younger female cousin |
| Older sister's son | Nephew (sister's son) |
| Son's wife | Daughter-in-law |
| Husband's father | Father-in-law (husband's) |
| Wife's mother | Mother-in-law (wife's) |
The scariest part of Chinese New Year visits is calling a relative by the wrong title: your father's older brother is bolu (uncle), your mother's brothers are jiushu (uncles), sons of your father's brothers are tang cousins, and same-generation relatives on your mother's side are biao cousins. One twist further and most people are lost.
This tool solves it with "relation chains": starting from "me", tap father, mother, husband, wife, son, daughter, older brother, younger brother, older sister or younger sister in turn, and it builds the chain live and gives the correct form of address — e.g. "father's older brother's son → older tang cousin". A full kinship algorithm is built in, so even long chains compute correctly. Tap "Step back" to undo.