Because it was just a trip home for lunch at noon, most of the students, like Zhen Yu, left their backpacks in the classroom.
The bell rang for the last class, and the students on the playground began to walk out towards the school gate in groups of threes and twos.
Zhen Yu, as usual, was waiting for her brother at Fangshan, with Fu Yu accompanying her not too far away.
Since a set square could temporarily substitute a ruler, Zhen Yu decided to wait until the weekend to go to Four Merchants Store to replace the lost stationery.
She had already made up her mind to get back the two pens she lent out that afternoon and to mark them with her other stationery that evening.
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Unexpectedly, upon entering the classroom, all the seated students looked at her with strange eyes.
Although Zhen Yu did not understand, she still calmly walked toward her own seat.