Mies van der Rohe proposed the principle of less is more in architectural treatment. Mies van der Rohe is one of the most important representatives of modernist architecture. He proposed the principle of "less is more" in the treatment of architectural art, advocated the unity of technology and art, and used new materials and new technologies as the main idea. Mies van der Rohe, a German architect and the principal of the Bauhaus School, is one of the most famous modernist architects. Together with Wright, Le Corbusier, and Gropius, he is also known as the four major modern architects. Mies Adhering to the architectural design philosophy of "less is more", we advocate the new concept of flowing space in terms of processing techniques. In 1928, we proposed the famous saying "less is more", advocating pure and simple architectural expression, advocating flowing space and glass. The structural form of the large bay in the wall still has great inspiration and influence on today's architectural design. The Barcelona Chair was designed in collaboration with Mies van der Rohe and Lily Leitch. It was designed to welcome the King and Queen of Spain. The Barcelona Chair became the first Barcelona chair in 1929. A classic work at the fair, it has also become a landmark work in modern furniture design.