Four years ago, Yu Zhi bumped into a figure from behind at the corner of a shopping mall.
The man she thought she would spend the rest of her life with walked past her with another woman on his arm.
She called seven times and got no answer. He sent a message: "Let's break up." Then blocked all his contact information.
Four years later, at her brother's parent-teacher meeting, she saw the person on the podium.
Gold-rimmed glasses, a white shirt, a bony hand holding a piece of chalk, writing straight handwriting on the blackboard.
Preface by Cen Huai.
He left her alone to talk and called her "Yu Zhi" with the same voice as four years ago.
Later she found out that he was in England that year, and there was no way he would show up at that corner because of the eight thousand kilometers and eight hours of time difference.
She recognized a wrong figure and missed him for four years.
"Yuzhi," he said, "I don't want to lose you again."