Even in a small design work, designers always try to design the product in an integration of techniques and asethetics, applicability and emotion, functions and ornamentation. It is of scientific and artistic combination to take mechanics, materials and design into account. Mechanics do not remain the internal theory in textbooks; materials do not remain the data in the database solely; art also no more represents the unrestrained imagination of artists. All of the three articles above can bring us new experience and inspiration.