The uncle selling bookmarks looked at the two kids speaking and felt his teeth ache. You're holding two taels of silver in your hand, and you come to buy bookmarks while still thinking it's not enough?
Do you actually want to buy a bunch or just four?
"Yangyang, you don't need silver to buy bookmarks, copper coins will do," Yang Chuxia reminded her younger son from the side. The elder son's calligraphy brush was a bit more expensive, so using the small change of silver coins was just right.
"Then, mom, how many copper coins should I give?" Yangyang asked, finding it difficult to decide as he looked at the copper coins in his purse.
"A bookmark is ten copper coins, so count out forty coins to give to the owner," she instructed.
"Oh," Yangyang acknowledged.
After paying the silver, Yangyang packed up his items and then went to grasp Yang Chuxia's hand, saying, "Mom, when we go back to the inn, can you tell me how to use silver coins?" He was deeply aware of his own shortcomings.