Harmless is an idiom in China, pronounced wú shāng dà yǎ m, which means that although it has influence, it does not harm the main things. From the preface of Qing Mao Jike's Life Now.
Nothing, meaning of nothing, injury, loss, meaning of loss, elegance, the matter of the Lord. Elegance: one of the components of The Book of Songs, which means elegance, elegance and generosity. It means that although it has an impact, it has no harm to the main aspects.
This is just mud.