慕: Attachment, aspiration. In names, it often conveys a sense of yearning, admiration, and lofty aspirations.
洱: Erhai, the name of a lake. It holds no particular significance in personal names.
Meaning: The name Mu Er carries a melodious tone, evoking a sense of admiration and yearning, while 'Er' brings to mind the tranquility and vastness of Erhai Lake, symbolizing lofty ambitions and a broad mind.