Is there a question mark in China's ancient poems?

The ancients had no punctuation marks. When reading, they pause according to the meaning of the text, or punctuate the book according to the pause at the same time. This is called sentence breaking.

Bad sentence breaks can lead to jokes or ambiguity.

Punctuation marks were introduced in the late Qing Dynasty and popularized during the May 4th Movement, which was the result of the New Culture Movement.