So one day, when Sheng Shi didn't come for the evening self-study, Gu Lanshan went home alone.
She rode her electric bike and, to take a shortcut, went through an old Beijing alley with sparse lighting, only a single lamp shining from far away.
At that time, the public security in Beijing wasn't as good as it is now.
In that narrow alley, Gu Lanshan caught the attention of a few gangsters.
Several gangsters followed her on motorcycles, singing a song with altered lyrics: "There's a pretty girl ahead, a pack of wolves behind, eyes wide open, drooling, almost undressing..."
