Explanation: refers to a large number of students. In modern Chinese written language, it is only used to describe students, but not one student or multiple students.

Pronunciation: shēn shēn xué zǐ

Source: Hippo chef students, who had no way out for a long time, came to Japan in large numbers with the cancellation of imperial examinations and the prevalence of study tours. (Wu's Memories from the Sino-Japanese War to the Revolution of 1911).