This source, an excerpt from an article by IT journalist Takemaki Makino, introduces OPPO and vivo, two prominent Chinese smartphone brands, often perceived in Japan as simply "cheap and poorly made." The author challenges this outdated image by explaining that these companies, part of the "Bubugao" or "BBK" system founded by Duan Yongping, have achieved success through bold technological innovation. The article details the history of Duan Yongping and the origins of BBK, highlighting his unique management philosophy of sharing profits and fostering talent, which has influenced the development of companies like OPPO and vivo and even the social e-commerce platform Pinduoduo. Ultimately, the source argues that understanding BBK and Duan Yongping provides crucial insight into the true nature of OPPO and vivo as technologically advanced, pioneering companies, not merely budget options.