Core Viewpoint - The historical significance of CRRC Qingdao Sifang Co., Ltd. (CRRC Sifang) in the development of China's railway industry and its role in the labor movement in Qingdao is highlighted, showcasing its evolution from a labor movement base to a modern manufacturing hub for rail transport equipment [1][2][4]. Group 1: Historical Context - CRRC Sifang's origins trace back to the labor movement in Qingdao, with the establishment of the first workers' union, the Christmas Society, in 1923, which played a crucial role in uniting workers against oppression [1]. - The company is recognized for producing China's first domestically manufactured steam locomotive, the "August 1," in 1952, marking a significant milestone in the country's railway manufacturing capabilities [2][4]. Group 2: Technological Advancements - CRRC Sifang has developed world-leading research and innovation capabilities, producing the first exported high-speed train, the first intercity train, and the first Chinese standard metro train [5]. - The company has a history of innovation, including the successful development of critical components like the crescent-shaped plate for traction systems, which were previously imported [2][4]. Group 3: Labor and Cultural Legacy - The spirit of self-reliance, hard work, and innovation, embodied in the "locomotive spirit," continues to be a core value among CRRC Sifang workers, influencing their approach to manufacturing and technology [4]. - The labor movement history of CRRC Sifang is not only a part of Qingdao's memory but also a significant chapter in the narrative of the Chinese working class [7].