Humans love to categorize things. It helps them to understand the world. You can already see that in very young babies when they develop their speaking skills. For example, first they only distinguish people and animals and so it can happen that all animals are called dog until the baby understands that a cat has 4 legs as well but is different from a dog. As development and understanding grows ..

In this universe there are the concepts of Sangsaeng and Sanggeuk. Sanggeuk is generally understood as the principle behind destruction, fighting or life taking. So its connotation is negative. Sangsaeng on the other hand is generally understood as the principle of nourishment, harmony and live giving. Its connotation is therefore positive. For this understanding people assume that they are supp..