BY GLOBAL TIMES In 1975, deep in the Qinling Mountains, China’s first fully electrified railway, the Baoji-Chengdu Railway, marked the beginning of a transformative journey toward railway modernization. Half a century later, on the Chengdu Plain, engineers are developing a cutting-edge 400 km/h traction power supply system for the CR450 bullet train, which is expected to establish a new global …