courtesy: courtesy. There are five gifts, namely, Ji Li, Fierce Li, Military Li, Bin Li and Jia Li.
le: it's Liu le. Six music: refers to six sets of music and dance, namely Yunmen Dajuan, Xianchi, Dashao, Daxia, Dayun and Dawu. The earliest ceremonial music and dance in ancient times, Yunmen Dajuan. Yao has "Xianchi". There was "Da Shao" in Shun Dynasty. Confucius claimed that he had heard Shao music and praised it greatly, saying that its music and dance were perfect.
Yu Shi has Daxia. There was Da Yun in the Shang Dynasty. There is "Da Wu" in the week. These are all famous ceremonial music and dances in ancient times. These six sets of music and dance were preserved in Zhou Zhou, and they became six kinds of music, which were used in major sacrificial activities: "Yunmen Dajuan" was used to worship the gods; "Xianchi" worships the god of the earth; Looking at the sacrifice of "Da Shao"; "Daxia" sacrifices mountains and rivers; "Da Yun" is dedicated to Jiang Yuan, the ancestor of Zhou Dynasty; "Dawu" is dedicated to the ancestors of the Zhou Dynasty. Six kinds of music spread to the Han Dynasty, and only two kinds of music were Da Shao and Da Wu.
shooting: military archery.
Yu: the technique of driving a chariot
Books: calligraphy (writing, literacy, writing) Six books (Zhou Li didn't explain, and later generations might guess): pictographic, indicative, knowing, pictographic, phonetic, annotation and borrowing. (Note: Zhuan Zhuan and Borrowing are literacy methods, while pictographic, indicative, knowing and pictophonetic are word-making methods, of which pictophonetic characters account for about 9%. )
number: Numerology, also known as magic number, is a technique of calculation and mathematics. There are nine chapters on arithmetic.