The explanation of micro-tone is light tone; subtle tone. "Selected Works· Ruan Ji's "Yong Huai" Poems No. 12": ""Beili" There are many strange dances, and there is a faint sound on the Pu." Li Shan annotated and quoted from "Book of Rites": "The sound on the Pu among the mulberry trees is also the sound of the subjugation of the country. "The Qin Fu" written by Wei Ji Kang of the Three Kingdoms: "The sound is soft and gentle, and the faint sound passes quickly." The poem "Xiang Ling Drum and Seed" by Tang Zhuang Ruona: "When the sound is subtle, the sound is subtle, and the elegant rhyme suddenly contains shang." Explanation: micro ē small, tiny: subtle. slight. small. miniature. Micro. Miniature carving. Calculus. microcomputer. Trace elements. Be cautious. Very little. less; slightly: slightly. Smile. Fine-tuning (俹). Decline; low: humble. humble. Profound; exquisite: subtle. Subtle. Small words and great righteousness. The explanation of sound is sound, which also refers to rhythmic sound: sound. music(?). temperament. timbre. volume. Sound area. Phonology. audiovisual. Vocal (voice, appearance). implication. Information, news: news. Good news. news. Radical: sound.