Xia Ruya didn't know that Wen Xinya suspected she had returned to Capital city and had raised her guard as well as launched a full investigation into the matter.
Mr. Z had arranged for her return and Xia Ruya believed that no one would detect her presence as long as she didn't expose herself.
It had been five months since her return to Capital city. She had been hiding quietly in the shadows to spy on Wen Xinya.
Further, she had been collecting all the information she could on the Wen Corporation's entertainment city project. She planned to invite her way into this project and make use of it to deal with Wen Xinya.
However, the entertainment city project was just too massive. Although Ning Shuqian had given her quite a bit of information, it was just the tip of the iceberg. As she was worried about revealing her own identity, she could only carry out her investigations from the shadows. As a result, this greatly limited her methods and results.