1. Responsible for the creative design of video and image advertisements for the company's overseas app products. Based on the characteristics of different apps and markets, propose creative video and image advertising ideas, as well as the creation and secondary creation of video and image materials; 2. Responsible for monitoring and organizing advertising material data, researching competitors and their own products, researching creative trends in advertising regions, and gaining insights into optimization directions for advertising materials; 3. Responsible for improving the CTR, CVR, etc. of advertising materials, guided by advertising effectiveness, and continuously optimizing and improving the design of advertising materials through data analysis;