Imitation of Pinyin Chinese Book, the first volume of Grade Five, a joke on page p79.

Take grandma to KFC for the first time, pay by mobile phone and scan QR code. After returning to her seat, Grandma said calmly, "Bao Er, although you have accomplished nothing in these years, it is good to have a mobile phone. With this mobile phone, grandma won't worry about your starvation. You can come here all day to scan ... "