The knocks on the door kept ringing. Jian Xiaoning seemed to sense impatience, so he shouted, "I'm coming..." while trying to open the door as quickly as possible. But he couldn't be quick, because he had just learned to use crutches, and he always felt uncomfortable using them, and his walking was very awkward. Finally, he reached the door and looked out through the peephole. There was a boy holding a snack box standing outside. He knew that this was the waiter from the "Aegean Sea Pastry Shop" who had brought him the egg tarts he ordered. Today was his birthday, and he didn't order a birthday cake, but only some egg tarts. So he opened the door. But after opening the door, he was stunned. The delivery boy was about his age, wearing a white T-shirt, jeans, blue and white sneakers, and had a handsome face. Jian Xiaoning actually knew this boy, but he didn't know his name. A month ago, when Jian Xiaoning went out with her boyfriend Zhu Yuliang, she met a few friends in the same circle. Some of them were friends with Zhu Yuliang, but Jian Xiaoning was not familiar with them. Only one person named Xiaohai was Zhu Yuliang's classmate, whom he had met once. Later, they went to a big food stall to eat barbecue, and the delivery boy was also there. They sat together while eating and chatted for a while. Jian Xiaoning knew that the 19-year-old boy was a freshman like her and was Xiaohai's buddy, but that was all. The…