When it comes to Sinology, it cannot be separated from the "three religions". When it comes to the "three religions", there will be "nine schools" or "nine streams", collectively known as "three religions and nine streams". The original origin of the term "three religions and nine streams" was very good. The earliest record of the "three religions" originated from a conversation between Sun Quan of the Three Kingdoms and the editor Ling Kan Ze, who mentioned the three religions of Confucianism, Taoism, and Buddhism; the saying of nine schools or nine streams first appeared in the "Book of Han· Bibliography", which includes 189 schools of thought, but the most important are the nine schools: "Among the ten schools of thought, the nine worth mentioning" refer to Confucianism, Taoism, Mohism, Legalism, Logic, Yin-Yang School, Diplomacy School, Miscellaneous School, and Agricultural School. In fact, it is a general reference to the main religions and various academic schools in China after the Han Dynasty.