When they first met, Dong Muching said to the girls in Dong Yue's dormitory: "You and Yue Yue can just call me second brother."
Lu Yuchen opened her mouth and tried, but she couldn't get the name "Second Brother" out of her mouth.
When they met again, Lu Yuchen was stabbed in order to save Dong Muching. Dong Muching told Lu Yuchen that she was the most important and that she should take care of herself first at all times. Lu Yuchen started calling Dong Muching second brother.
After gradually getting to know each other, Dong Muching got drunk and Lu Yuchen sent him home, but Dong Muching refused to let Lu Yuchen call him second brother. Lu Yuchen was confused when he heard him say: "Lu Yuchen, don't call me second brother. Can you call me A Xing?"
Later, Dong Muching and Lu Yuchen secretly fell in love. When he saw Dong Yue calling Lu Yuchen his wife, he was jealous, but he couldn't shout out.
Purpose: Where there is love, there is heaven