Abstract: Previous studies have suggested that the catching up and surpassing of latecomers have progressive characteristics, but in the special situation of rapid turnover and "bottleneck", there has been a practice of latecomers with dual identities of "catcher" and "surpasser" coexisting. However, existing research has rarely paid attention to the dual identity dilemma in this unique situation. Therefore, this study takes the optimal distinctiveness theory as the entry point. Based on the coexistence practice of catching up and surpassing in the chip field of Hisense, this paper explores the core issue of how to use the optimal distinctiveness mechanism to achieve a late breakthrough in the "bottleneck" situation when enterprises have dual identities at the same time. Research has found that: (1) in the context of "bottleneck" places the latecomer practice of this dual identity needs to go through two stages: the incubation period and the independent operation period. During the incubation period, the identities of "catcher" and "surpasser" need to cross performance and technical thresholds respectively, based on which differentiated compensation concertos can be carried out. During the independent operation period, it is necessary to cross the threshold of rapid iteration in order to perform differentiated compensation concertos. (2) We have studied and constructed a dual identity integrated concerto mechanism, including a leapfrog integrated concerto that runs through the incubation and independent operation periods, and a phased integrated mechanism that only applies to the corresponding stages. Finally, this study constructed a theoretical framework diagram for the optimal distinctiveness mechanism of dual identity latecomers under a rapidly iterative and "bottleneck" scenario, in order to provide some reference for latecomers facing the dilemma of dual identity.