Does a slogan for a concert involving thousands of people need to be enclosed in double quotation marks?

No need to add double quotes. Slogans use book title numbers. Book title numbers are punctuation marks used to indicate book titles, chapter titles, newspaper titles, file names, opera titles, song titles, picture titles, etc. They are also used in songs, movies, TV series and other literature and art that are closely related to written media. work. Double quotation marks are represented by "" in Chinese. In the past, they were represented by 『　　　』, but later in mainland China, quotation marks similar to Western characters were used, 　　　　, and ﹃﹄﹁﹂ was used vertically. However, the traditional Chinese characters in Hong Kong and Taiwan still use "" to represent double quotation marks. Single quotes can also be used inside double quotes.