Most Chinese families are extended type of family. They used distinct names for all the family members to avoid confusion.
PARENTS
Father 爸爸
Mother 妈妈
SIBLINGS
older brother 哥哥
younger brother 弟弟
older sister 姐姐
younger sister 妹妹
eldest 老大
GRANDPA
grandpa from father's side 爷爷
grandpa from mother's side 外公
GRANDMA
grandma from father's side 奶奶
grandma from mother's side 外婆
AUNT
aunt from mother's side 姨妈
aunt from father's side 姑姑
UNCLE
uncle from mother's side 舅舅
uncle from father's side
- father's older brother 叔叔
- father's younger brother 伯伯
COUSIN (mother's side)
-younger sister 表妹
-younger brother 表弟
-older sister 表姐
-older brother 表哥
COUSIN (father's side)
-younger sister 堂妹
-younger brother 堂弟
-older sister 堂姐
-older brother 堂哥
You
If you got married and have kids.
-son 兒子
-daughter 女兒
If your children got married, have kids on their own.
-grand son 孙子
-grand daughter 孙女
If you want, you can draw family tree and label it. Just like the example below.
