```
"Alright,"
The owner, still busy making dishes at the entrance of the restaurant, stole a moment to tally up Yuan's table, tapped on the calculator for a bit, and came up with a figure, "Miss, you've got quite the appetite, eating 5 buns and 4 baskets of dumplings, plus two bowls of soy milk, that'll be 53 yuan in total."
"Keep the change," Yuan Yundanfengqing nonchalantly produced a hundred-yuan note from inside her Taoist robe, and airily placed it on the counter.
The owner took the note she offered, intending to closely examine its authenticity, but before he could take a good look, he sensed something was amiss: "Miss, this money can't be used. Do you have anything else?"
"Can't be used? How is that possible?"
Yuan produced another note from her robe: "All the money I have on me is like this, surely it's all real."
"But, it's not... This money, it's too old, at least forty years out of date."