Meng explained:

1. Audio and video. From the sound, méng. Original meaning: grass name.

2. Grass name. That's dodder. Convolvulaceae. Annual twining parasitic herbs. The stems are very thin, silky, yellow and white, and there are suckers everywhere, which are attached to plants such as Leguminosae, Compositae and Chenopodiaceae. Leaves degenerate and have small white flowers. Seeds are used as medicine.

3. refers to neglected children. Such as: young (ignorant and naive children); Naive (naive and ignorant); Mongolian pavilion (the earliest place to educate children in the old society); Meng Xue (that is, Mengguan); Shu Meng (that is, Mengguan).

4. Turbid gas. Although autumn is the time to rest day and night, but after all, it is done at sunrise and there is a faint light, I still think the night is short. -Qing Liu E "Travel Notes of the Old Disabled"

5. Another example: light is airborne (before sunrise and just after sunset, although light can't directly illuminate the earth, the earth is still quite bright, which is caused by the refraction of air and atmosphere); Foggy (the atmosphere around the earth in ancient times) Deception, coma, black eyes, wild speculation

Other explanations:

In Yang Jide's Lecture on Zhouyi, the meanings of "Meng" and "Meng" come from the hexagrams in Zhouyi.

Judging from the divinatory symbols, two yang hexagrams lived in the upper hexagram and the second hexagram, belonging to the ancestral hall and the master respectively, representing the aristocratic status. Four yin and two yang surround each other, and they are the sons of nobles, so the word "Meng" means education.

Gua put forward the concept of how to educate: "Meng Heng. I begged Meng Tong, and Meng Tong begged me. If you sue at the beginning, you will blaspheme again and again, and if you blaspheme, you will not sue. Li Zhen. " It means: it is a good idea to educate from an early age. It's not that I ask my children to receive education, but that the children take the initiative to ask me to receive education.

Tell him your thoughts for the first time, and you must understand and communicate yourself for the second time and the third time. If you can understand the communication, don't tell him again.