What does a great day mean?

This sentence means Chongqing dialect, and Mandarin is translated as "April Fool's Day".

"Tianbang Day" is a Chongqing dialect, and Mandarin is translated as "Fool Day". It is a derogatory term used to describe a person's stupidity, stupidity and stupidity.

The use of this word often depends on the relationship and context between the speaker and the speaker; For example, if a child doesn't follow the rules or does something unacceptable to his family, parents may say "great day" to express their dissatisfaction and disappointment with their child's behavior.