Core-maker refers to the work of manufacturing semiconductor chips, which is an important link in high-tech industry. Core-making workers need precise operating skills and rigorous working attitude, and can skillfully operate various advanced equipment and technological processes. The work of core manufacturers includes chip manufacturing, testing and quality control, which is of great significance to the development of semiconductor industry. In contrast, die-casting workers are engaged in metal die-casting process, mainly responsible for injecting molten metal into molds and manufacturing various metal parts. Although die-casting workers also need certain skills and experience, compared with core-making workers, die-casting workers have lower technical threshold and relatively simple work content. Therefore, considering comprehensively, the core-making work is still good.