ZONGRUWU studio's façade component design offers a sustainable building solution for subtropical regions, promoting eco-friendly construction with cultural awareness. It utilizes innovative 3D-printed PETg molds for concrete, which are reusable up to seven times, diminishing material waste and concrete usage. The design features self-shading patterns based on solar paths, enhancing thermal efficiency and reducing the need for mechanical cooling. This approach not only challenges conventional building practices but also aligns modern aesthetics with environmental responsiveness.