A lithography machine is a semiconductor manufacturing device used to make tiny structures on a chip. 5 nanometers and 7 nanometers refer to the minimum line width used in the fabrication of the chip, that is, the smallest drawable structure size on the chip. In other words, nanometers are a measure of tiny size, with 5 and 7 nanometers indicating that the width of a graphable structure is 5 and 7 nanometers, respectively. The smaller the number, the more advanced the chip manufacturing technology, enabling faster and more powerful chips to be produced. Therefore, 5nm and 7nm are now hot topics in the chip manufacturing industry, representing the most advanced level of manufacturing technology.