The birds spread their wings and flew high, the harmonious sound of the zither. The following are some ancient sentences related to the piano: The zither is the spirit of sound and the spiritual platform of the human heart. Zhou Li·Kao Gong Ji The zither is the master of wonderful music and the reason why gentlemen play it. Book of Rites·Book of Learning 3. The rise of the zither and lyre can be used to explain virtue. Preface to the Book of Songs One of the six arts of the zither is literature, etiquette, music, poetry, calligraphy and painting. Book of Rites·Book of Music The zither is the instrument of the south, the song of the north, the play of gentlemen, and the collection of villains. Chuang Tzu, Foreign Matter 6. The zither is the reason why a gentleman cultivates his moral character, manages his family, rules the country, and rules the world. "Lu's Spring and Autumn Annals, Original Taste" The sound of the strings of zither and lyre, and the sound of the strings of elegant instruments, is melodious. Zhou Li·Kao Gong Ji 8. The lute is the human heart's external environment. It is moved by things and moved by emotions, and the sound is produced. The sound is produced and the text is expressed. Song·Wang Anshi's "Qin and Se Lun" The zither is the work of a sage to amuse himself and please the heart. Tang·Li Bai's Song of Qin Music The zither is the most precious treasure of ancient times, and the most precious treasure of today can move one's heart, move one's will, but not move one's will, but not move one's feelings. Ming·Feng Menglong, Yu Shi Ming Yan