What cram school did Park Yun-sik attend during the holiday?
"Who stole my time?" In the math of the story, Park Yun-sik is the protagonist, and the story is carried out during Park Yun-sik's vacation. Park Yun-sik's vacation is a math cram school. Who Stole My Time is a book published by Beijing Children's Publishing House on 20 15+ 1 by Cui Xingmei.