Chinese equivilant for Korean addressing
Oppa/Hyung (big brother) -> Ge Ge (哥哥)
Noona/Unni (big sister) -> Da Jie (大姐) or Jie Jie (姐姐)
Dongsaeng (little brother) -> Di Di (弟弟)
Dongsaeng (little sister) -> Mei Mei (妹妹)*I’m not a native speaker and I don’t study Chinese either. I’ve this from these 2 sources! Please correct me if I’m wrong!!*
