Tsinghua University's Fifth Teaching Building(1988,Approximate3,000㎡)combines classrooms and lecture halls.Addressing monotonous corridors and poor lighting,its redesign uses orange metallic panels against gray-white surfaces,with linear lighting across ceilings,walls,and floors to create a symbolic"time tunnel"for academic exploration.Classrooms extend the "sunlight"theme via orange walls,flooring,and seats,paired with white acoustic ceilings for sound absorption and visual clarity.Through color, materials,and lighting,the space transforms into vibrant yet functional educational environments.