The most popular Douyin doorway design diagram refers to the most trending and widely shared doorway design images on the Chinese short video platform Douyin. These diagrams often showcase innovative and eye-catching designs that attract the attention of users. They can range from simple aesthetic modifications to complex architectural transformations, aiming to enhance the visual appeal and branding of the doorway. The popularity of such designs can be attributed to their visual appeal, practicality, and the influence of social media platforms like Douyin in promoting unique and creative content.