Ying and Yang are philosophical theory based on the unity of the notion of evil and goodness. According to her: Yin and Yang are dependent on each other and can not exist without the other. Yin is dark, evil, and so on. Yang - light, good and etc..
Chakras reveals the unique level of human evolutionary development from primitive existence to spiritual perfection, which is in ours kundalini - it is the first-born, transforming, treating energy that maintains an optimal human condition. It supports us 24 hours a day and knows everything we do, say, think or feel. It promotes our purification and spiritual growth..