C1604 The Twilight Zone 140 Qing Qing's Invitation

From this week onwards, you're not allowed to bring a cell phone back to school.

Since Grandma Yan left, she had never contacted her. This kind of thing had never happened before.

Feeling unexplainable unease, she took her cellphone back to school and gave it to the teacher to keep in custody. That way, when she had free time, she could contact Grandma Yan, who could also contact her