I'm currently reading 'The Kite Runner' by Khaled Hosseini, and notice that in some place in the book, i can't really comprehend the use of past perfect tense instead of simple past tense. Consider this paragraph:
"Yes." It was the shortcut to school. I remembered the day Hassan and I crossed it and the soldiers had teased Hassan about his mother. Hassan had cried in the cinema later, and I had put an arm around him.
I don't really understand why past perfect tense is used (had teased, had cried, had put) instead of past simple. Does the paragraph means anything else if I put it like this:
"Yes." It was the shortcut to school. I remembered the day Hassan and I crossed it and the soldiers teased Hassan about his mother. Hassan cried in the cinema later, and I put an arm around him.
Please, enlighten me.
Thank you.