Chip size usually refers to the minimum spacing of circuit elements on the chip, in nanometers. In today's semiconductor industry, chip sizes have gradually shrunk to below 10 nanometers, which means that each circuit element is only a few dozen atoms in size. As the size of chips continues to shrink, the integration and performance of chips are also improving, making modern electronic devices such as computers, mobile phones, and tablets more compact, efficient, and powerful. However, with the further reduction of chip size, the process difficulty and cost are also increasing, so the future development of chip technology will face more challenges.