Zhang Chaofan, senior engineer of China Railway Nanning Group, despite being in the industry for just nine years, has already become one of the company's most decorated engineers.

In recent years, high-speed trains have been upgraded and Zhang is also developing his capabilities rapidly. He has led research and development for more than 10 scientific and technological projects, and in the process, discovered and eliminated four major hidden dangers. The data retrieval and analysis efficiency of a single bullet train was improved by 160 percent, and the equipment failure rate was reduced by 41.3 percent year on year.