The character "洱" (er) does not have the same meaning as ear (耳). During the
Han to
Tang dynasty, there was an ancient ethnic named
Kunming Yi or Kunming Barbarian () lived in the neighbouring region of Erhai lake. Therefore, the lake was also called "Kunming Lake". The
Kunming Yi has another name
Kun-mi (). In the following time, Chinese literature recorded the name "昆弥" as "昆弭" (Kun-mi) that "弭" is a
rebus of "弥". And the name of the lake was also changed to the character "渳" (mi) which has a water-meaning
radical () attached to it.
Fang Guoyu believe the name "洱" (er) was simplified from "渳", after that the name "Erhai" continues to this day. According to Bai scholar's research, the "Yeyu" in the Chinese name "Yeyuze" (
ze [泽] means lake) is evolved from
Bai language which means "lower water", the pronunciation written in
IPA as . In the Bai language
Dali dialect, the "lower" () is also pronounced . Xu Lin believe the Chinese name "洱" is evolved from . ==Geography==