20 minutes later, Jiang An and Zhang Yean arrived at the bookstore two kilometers away.
At the inquiry desk, Jiang An asked, "Do you sell magnifying glasses?"
The attendant replied, "Yes! In the stationery section on the left."
Immediately, the two walked over there.
At a glance, there were different types of magnifying glasses on the shelves.
Jiang An glanced through and picked out the largest magnifying glass.
He took the magnifying glass to the cashier, and the attendant scanned it and said, "Today, all items in our stationery section have a promotion: spend 100 and get a 20% discount."
"You seem like a teacher; do you want to buy two more magnifying glasses?"
Jiang An and Zhang Yean glanced at each other, and they both laughed simultaneously.
Then the cashier added, "Earlier, a middle school physics teacher bought 10 magnifying glasses at once to experiment with his students."
Jiang An replied, "Just buying one will do!"
