The word "teaching" can be traced back to Mencius at the earliest. Mencius clearly put forward in the book "Dedicated Mencius": "It is three pleasures to be nurtured by talents in the world." Here, Mencius used the word "education" to express his attention and expectation for talent training. He believes that it is a great blessing in life to be able to get an education from the world's talents. This is also the first appearance of the word "education" in the history of China, marking the initial formation of China's ancient educational thought.