「找你七百八十，謝謝。」 I collected the change and the receipt and placed them on top of the copy of the 廣韻 that i just bought. I lowered this system that I had just created, intending to slide the change into my hand and transfer it to my pocket. The coins slid. A 10-NT coin flew off, obeying the laws of projectile motion, diving into the gap behind the bookshelf. Crap. The woman looked up, saw nothing of interest, and looked back down again.

I never did get that coin back.