What does the name of the Irtysh River mean?

The Annals of the Western Regions says that "the quasi-Gaelic language is tight. There are rivers in the territory, hence the name. "

In other words, "Erqis" is Junggar. Tightness means that the tone syllable is urgent and short, which means seven.

Yuan Taizu Ji called it the River of Ye Er, Yuan Xianzong Ji called it the Stone River of Ye Er, Yuan Wuzong Ji called it the Water Loss of Ye Er, and Yuan Secret History called it the Water Loss of Ye Er. In the Ming Dynasty, Giulio Aleni wrote Official Discipline, which is called Abei River. In the "Waterway Brief" written by Qi Runan in the Qing Dynasty, it was called the "second-class temple river".

After modern times, it was translated into Irtysh River.