Dialects are not always less formal than standard languages. Whether they are formal or not depends on the occasion, context and content of the language. Both have formal ways of expression: - **Formal occasions**: In formal business meetings, official speeches, academic reports and other scenarios, standard languages are usually used because they are standardized and universal, and can ensure that information is accurately conveyed to people from different regions and backgrounds, reflecting professionalism, rigor and standardization. - **Informal occasions**: In daily communication, such as chatting with family and friends, community communication, etc., dialects can express emotions more naturally and show local cultural characteristics. At this time, using dialects will appear more intimate and casual. - **Specific situations**: In some artistic performances with regional cultural characteristics, local traditional rituals or specific cultural activities, the use of dialects can enhance cultural identity and belonging. At this time, dialects can also be formal and solemn. In most cases, dialects are rarely used in formal written expressions and official communications. However, in some literary works and artistic creations with regional culture as the theme, the use of dialects can enhance the local characteristics and cultural heritage of the works, giving them unique artistic charm and cultural value. At this time, dialects can also be formal and expressive.