The building of CCTV headquarter locates in the CBD of Beijing, which including CCTV headquarter building, TV Culture Center, Service Building, Celebration Square. This project is inside of the CCTN office, we install RGBW digital strip in the cylinder. It send out fascinating RGBW mixing light through the hollowed out part of the light box, stressed the division of office space, making the entire office space more three-dimensional. It also reflects the strict working atmosphere of CCTV.