In Mencius's musical metaphors,the bells and chimes do not correspond to the beginning and end of the piece.The sound of bells and chimes starts the music,like a battle order,and plays a role of rhythmic signals for other instruments.Considering the actual performance process of ancient musical instruments in China,it is not correct to understand that the chime continues the sound of the bell.The ancients always tried to avoid the reverberation of the bell,so why do you need a chime to continue the sound.To continue the chime of the bell,it's not the pursuit of musicians but an imagination of scholars.Due to the stability of the bronze and stone,the metaphor of Mencius's music not only metaphorizes Confucius as a saint with all vir-tues,but also metaphorizes him as the law of later generations.The"Wu Xing"uses the bell and chime as a metaphor for the inside and outside,and finally achieves the ideological purpose of combining the inside and the outside.This is different from Mencius.