"Sura" Yin and Yang is an ancient Chinese philosophy, say that everything in the world works through opponent's energy, and everything has opposite sense of the world balance. As indicated by Tora Morrison's book Sula, the idea of this opposite part also came into the literature. According to social customs, the character Nel is positive (positive / good) and Sula is negative (negative / evil). This is the only way to get the two characters.
In the yin and yang model of China, the shade (black) contains poplar seeds (in the form of white spots). There is a shadow, but the funny thing is that because the shade is included, the shade is also yang. The truth, under certain conditions, the shade can be sunny. Yang exists in the shade, so you can do this. Although there is a balance, this relationship realizes harmony beyond the balance. When the two things are balanced, they are equal, but they are still separate. In a harmonious relationship, the two energies are completely reflected in the rotating yin and yang symbols and merge into a seamless whole.
The balance between yin and yang is very important. If the shade is strong, the sun will weaken and vice versa. Since yin and yang can be exchanged under certain conditions, they usually do not distinguish between yin and yang. That is, a yin element can contain a specific part of yang and a yang element can contain a specific element of yin. The balance between yin and yang is considered to exist in all. Yin and yang symbols (also known as bold symbols) are composed of circles divided into half of the curve. Half of the circle is black, usually a maze, the other is white, that is a square. The dots of each color are near the middle of the other half. Therefore, the two halves are woven into a spiral curve and the whole is divided into semicircles. A small point represents the idea that there is another half of the seed on both sides.
The shade has a black side, the inside is a white dot, the sun is a white side, and the inside is a black spot. The relationship between yin and yang is usually expressed by the sun shining in mountains and valleys. The shade (literally meaning "dark place" or "north slope") is a dark area hidden by the mountains, but the sun (literally "meaning the sunny day" or "the slope on the south side") is a bright part is. As the sun moves through the sky, yin and yang gradually exchange with each other, hiding what is hidden and what is hidden.