Wang Xue's plan was to let Zhou Jiajia find an excuse to pretend to be close with Yang Ming at the end of the publicity. That way they would have the opportunity to communicate if the two people went home together.
Zhou Jiajia had a good understanding of Yang Ming before. She knew that Yang Ming lived in the Song Jiang Bus Factory Employee Family Compound, so she found a reason to go to the Red Flag High School.
Coincidentally, during the promotion, the only two girls in their group, she and Song Yu, were chatting. Song Yu asked her where she was going after the promotion ended. Zhou Jiajia didn't think much and said that she was heading toward Red Flag High School. But she didn't expect that Song Yu's home was actually near Red Flag High School, so Song Yu asked to go home with Zhou Jiajia.