What are the meanings of "Yin" and "Yang" in ancient Chinese?

"Yin": the north of the mountain and the south of the water. Yang: Shan Zhinan, north of the water.

The original meaning of the word "Yang" refers to Shan Zhinan, north of the water. Extending to the sun, sunlight; Also extended to warmth; It also means bright. Refers to the concept of ancient philosophy, as opposed to Yin. It also means "exposed" and "superficial".

Traditionally, Yin and Yang represent the most basic opposition of all things. It is the objective law of nature, the origin of the movement and change of all things, and the basic law of human understanding of things. The concept of Yin and Yang originated from the view of nature of ancient people in China. The ancients summed up the concept of yin and yang in a philosophical way by observing various opposing and related natural phenomena in nature, such as heaven and earth, sun and moon, day and night, cold and heat, men and women, up and down, etc.

Extended data:

Yin He not only represents opposing things, but also can be used to analyze two aspects of internal opposition. Generally speaking, everything that is energetic, extroverted, rising, warm and bright belongs to Yang.

Relatively quiet, defensive, healthy, cold and dark belong to yin. In terms of heaven and earth, the weather is light and bright, and the atmosphere is heavy and turbid. In terms of fire and water, water is cold, nourishing subordinate yin, fire is hot, and inflammation belongs to yang.

The theory of Yin-Yang and Five Elements is a simple dialectical thought of China in ancient times, and the world was conceived, developed and changed under the impetus of Yin-Yang and Qi. It is considered that the five elements of wood, fire, earth, gold and water are its basic changing relations. The five elements nourish and restrict each other and are in constant movement and change.

Baidu Encyclopedia-Yang

Baidu Encyclopedia-Yin