"My cousin sold all his crayons for marbles, which were the currency among the boys."
"Before that, my cousin had never played with marbles, but since then, every time he went out to play, his two deep pockets would be full of marbles when he came back."
"He traded marbles for pens, practice books, erasers, and even sold them for money. The small shop sold them for one-tenth of a yuan each, but he sold two for one-tenth of a yuan, and if you bought five-tenths worth, he would throw in two more marbles of slightly inferior quality. He made quite a lot of money by our standards."
"How much?" He Qingyan asked Gu Ran.
"About three hundred yuan."
"That much?" Tang Ling said in surprise, "I thought it was at most one hundred!"
