"Buying 1o is that 5 years?"

Now that I'm getting older, I really can't stand looking at screenshots like this anymore.
A mother diagnosed with cancer wanted to buy a "Peking University" red envelope cover for her child who is about to take the middle school entrance exam to bring good luck.
When she saw "Valid for 6 months," she may have been calculating in her heart how much longer she could accompany her child.