Group 1 - Yang Yongxiu, a senior technician at China FAW Group, has been involved in the research and development of over 30 key projects, including V12 and V8 engines, and has obtained 18 national invention patents [1][2] - The precision requirement for machining in Yang's role is extremely high, with a recent achievement of controlling the main bearing hole precision within 0.012 millimeters, surpassing international standards [2][3] - The transition from traditional fuel vehicles to new energy vehicles presents new challenges for workers, particularly in achieving a machining precision of 0.008 millimeters for electric motor housings [2][4] Group 2 - China FAW has achieved independent mass production of electric drive systems for new energy vehicles, marking a significant milestone in the industry [4] - Yang Yongxiu has taken on the responsibility of skill transmission, training over 3,000 individuals, with more than 110 participants winning awards in various skill competitions [4]