There may be many reasons why Bird signed up to expand the film culture. First of all, Bird keeps moving forward on the music road, but the development may not be enough to meet his expectations. Therefore, he may hope to further improve his music career by signing a contract with the company and using the company's resources and platform. Secondly, as an innovative company, Tuoying Culture may be more receptive to new things and provide more opportunities and resources, which may be one of the important reasons why Bird chose to sign the contract.
It should be noted that this is only a possible explanation, and the specific reasons may need to be deeply understood based on more comprehensive information and Bird's personal decision-making factors.