It is said that Confucius’ music teacher was Chang Hong.

Chang Hong, courtesy name Shu, was born in Gaoyanshan, Zhongyi Town, Ziyang City. He was born in the late Spring and Autumn Period 2,400 years ago and was a doctor of internal history in the Eastern Zhou Dynasty. Chang Hong was erudite and talented, good at astronomy and proficient in music. He wrote 15 articles including "The Great Wilderness Eastern Classic" and enjoyed the reputation of "the wise man with many stars".

Chang Hong is one of Confucius’ teachers. Chang Hong was a wise official in the Zhou Dynasty. He was well-informed and erudite. He was knowledgeable about astronomy and geography. He also studied calendars and arithmetic. But what he is most proficient in is music theory

In Han Yu's "Teacher's Theory" of the Tang Dynasty, there is a sentence that "Confucius studied under Tanzi, Chang Hong, Xiang, and Lao Dan". In 521 BC, Confucius made a special trip to visit Chang Hong. Chang Hong explained music and astronomy to him, exchanged knowledge and political opinions, and also discussed music together. After spending several months together, we formed a deep friendship.

Confucius:

Confucius (551 BC - 479 BC), whose surname was Qiu and courtesy name Zhongni, was born in Zou Yi (now Qufu, Shandong Province) of the state of Lu. His father's name is Shu Liang He, and his mother's name is Yan Zhengzai. An educator, thinker, and politician in the late Spring and Autumn Period, he was the founder of Confucianism. When Confucius was alive, he was known as the "Sage of Heaven" and "The Wooden Duo of Heaven" and was a representative figure of Chinese culture.

Dong Zhongshu during the reign of Emperor Wu of the Han Dynasty proposed "to abolish hundreds of schools of thought and write down the Six Classics", which established and consolidated the central position of Confucius' theory in Chinese culture. Later rulers or Confucian scholars honored him as a saint, a literary sage, and a literary sage. The most holy teacher, the teacher for all generations. His thoughts have had a profound impact on China and the world, and he is listed as the first among the "Top Ten Cultural Celebrities in the World".