Erhai or Er Lake, is an alpine fault lake in Dali City, Dali Prefecture, Yunnan province, China. Erhai was also known as Yeyuze or Kunming Lake in ancient times. The character "洱" (er) does not have the same meaning as ear. During the Han to Tang dynasty, there was an ancient ethnic named Kunming Yi or Kunming Barbarian lived in the neighbo…Erhai or Er Lake, is an alpine fault lake in Dali City, Dali Prefecture, Yunnan province, China. Erhai was also known as Yeyuze or Kunming Lake in ancient times. The character "洱" (er) does not have the same meaning as ear. 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" that "弭" is a rebus of "弥". And the name of the lake was also changed to the character "渳" 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.