Eighteen-year-old Chen Yufei thinks the most handsome boy in the world is Zhang Yining. Nineteen-year-old Chen Yufei thinks Zhang Yining looks good when she is fat. Twenty-year-old Chen Yufei once thought of tricking Zhang Yining into going to the Civil Affairs Bureau together. Looking back on the past, Chen Yufei sometimes felt very grateful that the college entrance examination put her and Zhang Yining in the same place, and thanked her for being thick-skinned, allowing her to bravely try, and then know that they were together.