Designers of new products have to accomplish two things at the same time, giving the products their perceivable meanings as well as forms of expression. In other words, they play double-roles of both interpreter and creator. Throughout the process, they have to perceive and transform personal intentions and external message, sometimes facing tangibly concrete products. This research pays special attention to the "conception and operation" activities, including the problems they encounter that are worth reference or application. Research method of the article starts with contemplations upon the conception mechanism as found in literature review, follows with the proposed methodical procedures of interpretation and creation, and then finally examines design cases that operationalized these procedures. Four cases of application are studied as they represent "interpretive writing," "imagination and creation," "new creative works," and "remarks of interpretation and creation." The author then compares and discusses the cases with the conception mechanisms found in our earlier literature review. In the conclusive section, we concisely illustrate the leading roles description, understanding, reflection, and envision play in the path of new product designing and finally emphasize that our proposed methodical procedures "from conception to creation" can be of good reference and heuristic value if applied to design education or research on design creation.