What clothes belong to formal wear?

Formal dress refers to clothes worn on serious and formal occasions. In western countries, formal attire includes suits and evening dresses; In China, suits are the main formal attire, and sometimes you can wear Chinese tunic suit, jacket and other clothes. Wearing only shirts and trousers in summer is also a manifestation of formal dress, and suits with stand-up collars in Zhongshan suit also belong to the category of formal dress. Only by paying attention to the occasion and the corresponding atmosphere can a suit show its solemn characteristics.