This was because Gu Feirou was a signed singer with 'Moon Glory' Company, and Moon Glory and Star Glory had always been rival companies.
Gu Feirou made her debut one year ago. Her stage name was 'Little Ah Di'. Previously, Lin Jingxuan had helped her a lot behind the scenes. With Jingxuan backing her, she was quite famous in the music industry. She was not that popular yet. However, she always wore a mask and had never revealed her appearance when she sang. Additionally, she rarely participated in events. Hence, those who knew her had never seen her real face. She became popular all because of a concert.
After she was reborn, she specifically picked a stage name that was similar to Gu Feirou and opted to sign with a rival company. Her objective was to increase Gu Feirou's 'fame' in the music industry. She wanted her to have a taste of pain and know how it would feel to suffer a fall from great heights.
