Nine years ago, the girl saved the boy.
The boy said: "What is your name?"
The girl replied: "My name is Xi Tong, what's yours?"
"My name is Lu Yanqing, and I will marry you when I grow up!"
The girl didn't take it seriously and thought the boy was joking. However, when they meet again nine years later, he and she fall for each other...
Concept: modern romance