1, yuyin: It means that the voice is clear and euphemistic like jade, which means noble and pure.
2. Qin Ming: Describing the sound as pleasant as playing the piano means that the timbre is beautiful.
3, silver bell: the metaphor sounds crisp and pleasant, just like the sound of a silver bell.
4. Silver: Xiao Sheng-like beautiful voice, which means graceful and graceful.
5. Elegant voice: refers to the elegant and pleasant voice, representing nobility and beauty.
The above answers are for reference only, please don't be blindly superstitious.