The reason is that vertical screen is more common on mobile phone devices, and users are more accustomed to using vertical screen operation. Vertical screen can better adapt to different sizes of mobile phone screens and provide better user experience. The vertical screen layout is also more in line with the function and interface design of Alipay sharing plan, which can better display the sharing ratio, transaction records and other information, and it is more convenient to slide and view more content in vertical screen mode.