"I'm home!" Mai Mang called as she came through the door. Jingyuan came out of his room and asked right away, "Maimai, do you know Qi Han?" The girl stood blankly in the entryway and blinked. "Who?" Jingyuan handed her the photo. "Is this yours? How did it get into my math book?" He pointed at Qi Han in the photo. "Weren't you talking to him?" Mai Mang understood and exhaled. "I've been looking for it all day thinking I'd lost it. I don't know him. I wasn't talking to him. I was talking to Yi...