Banquet and entertainment

Japanese: 宴饗楽 - えんきょうがく

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[Chinese Gagaku]
Gagaku has its origins in songs and dances linked to ancient rituals, but the concept of gagaku began in the Spring and Autumn period (8th to 5th centuries BC) when Confucius distinguished between Gasheng (elegant music) and Zhengsheng (entertaining, pleasing to the ears, music of the Zheng and Wei states) and respected Gasheng as Confucian ritual music. During the Warring States period (5th to 3rd centuries BC), there were temple ritual music to worship ancestors, suburban ritual music to worship the gods of heaven, earth, mountains, and rivers, and banquet music for ceremonial banquets, and dances for the literary and military were performed. Originally, there were four dancers, but by the end of the Warring States period, the Liukhu dance with 12 dancers appeared.

From "Jubuki"

...the name of a style of banquet music performed at the banquets of the Tang Dynasty in China. First, under Emperor Wen of the Sui Dynasty, seven types of folk music from the Six Dynasties and imported music were combined to form a Shichibu-gi.

*Some of the terminology explanations that refer to "Enkyoraku" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

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【中国の雅楽】
　雅楽の起源は太古の祭祀と結びついた歌舞にあるが，雅楽という観念は，春秋時代(前8～前5世紀)に孔子が雅声(雅正の楽)と鄭声(娯楽的で人の耳をよろこばす鄭国や衛国の楽)を区別し，儒教の礼楽として雅声を尊重したことに始まる。戦国時代(前5～前3世紀)には祖先をまつる廟祭楽，天地山川の神をまつる郊祀楽，儀礼宴饗の宴饗楽があり，文武の舞が行われた。舞人ははじめ4人であったが，戦国時代末には12人の六佾の舞が現れた。…