Senses
三教九流 religions and schools of thought
the Three Religions (Confucianism, Buddhism, Daoism) and the Nine Schools of Thought (Confucians, Daoists, Yin-Yang, Legalists, Logicians, Mohists, Political Strategists, Eclectics, and Agriculturists)
三教九流 people from all walks of life
people from all trades and backgrounds; often used to describe a diverse or shady mixture of people in society