At this moment, John Qiao had no idea what was going on. He was just thinking of taking advantage of the lunch break to review what he had learned in the morning.
Confucius was right about reviewing the past to learn new things.
He was flipping through a book when Alex Chen's cell phone rang.
John Qiao didn't take it seriously and continued to ponder this somewhat complicated physics problem.
Alex Chen picked up the phone and went to the window to answer it: "Mom, I'm..."
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