It's the age of no memory
The Chinese idiom, MI ǎ nhu á izh ī Su ì, means three years old. It comes from the Analects of Confucius Yang Huo.
The origin of Idioms
In the Analects of Confucius, Yang Huo: "the son was born for three years, and then he was free from his parents."
Idiom usage
As an object; in writing
Chinese PinYin : miǎn huái zhī suì
It's the age of no memory
at large the better to apprehend him. yù qín gù zòng