The Yin Yang School was a fictional educational institution that appeared in many web novels. The following is an introduction to some of the people in the Yin-Yang School: Mr. Yin Yang: The principal of Yin Yang School is a Taoist master who is proficient in Yin Yang Arts. He was usually responsible for guiding the students in their cultivation and would regularly publish some teachings and techniques related to the Yin-Yang Technique. Mr. and Mrs. Yin Yang: The vice principal of Yin Yang School is a female Taoist who is proficient in Yin Yang Arts. She was usually responsible for supervising the students 'cultivation and would provide some guidance and suggestions on the Yin-Yang technique. Yin-Yang Disciples: The students of Yin-Yang School usually come from different regions and countries. They all receive guidance and training from Mr. Yin-Yang so that they can master the basic skills of Yin-Yang Technique. Young Yin Yang Junior Sister: A young female disciple of the Yin Yang School. She is usually more proficient in the Yin Yang Art than Master Yin Yang. She is an important assistant of Master Yin Yang. Yin-Yang Master's Disciples: The other students of Yin-Yang School are also apprentices of Yin-Yang Master. They have received guidance and training from Yin-Yang Master so that they can master the basic skills of Yin-Yang Technique. Other characters from the Yin Yang School often appeared, such as the owner of the Yin Yang Shop, the relatives and friends of Mister Yin Yang, and so on. These characters usually have the knowledge and skills of the Yin-Yang Art and explore the Yin-Yang World with the students of the Yin-Yang School.