I remember a poem. What symbol is used after it?

Adding a comma after the word "Xiang" is completely different from the first two cases. "Xiang" and "Xiang" are inseparable, so a comma is used in the middle, which only indicates the pause of tone.

Only use colons after the word "Xiang" without quotation marks. It is the author's reference to the protagonist's thoughts, and it is the psychological activity processed by the author, without quotation marks.

The word "Xiang" is followed by colons and quotation marks, which is the author's specific reference to the protagonist's content and has not been processed. It is a specific psychological activity.