Xīzhuānggélǚ de tā ràng rén gǎndào hěn yǒu zhíyè qìzhì.
Dressed impeccably in a suit, he exuded a very professional air.
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culture
This idiom captures the fully Western-formal look: 西装 (Western-style suit) + 革履 (leather shoes). It is used to describe a polished, business-professional appearance, often with a nuance of someone who looks the part of authority or success.