introduction: A legendary trouble caused by a cucumber. One evening, after being caught red-handed, the man scolded: "Have you really forgotten me?" She scratched her hair: "Sorry, I have face blindness and couldn''''t recall for a moment." The man leaned in close to remind her kindly: "Half a year ago, that night..." Her face turned red with embarrassment: "It was you!" The man smiled naturally, not only him but also all the ones after would be him! Face blindness? Not remembering after seeing once is okay, but if it''''s for a lifetime, wouldn''''t she still remember?