That means the chip is made at 4 nanometers. The trend of the process technology is to develop in the direction of higher density. The higher the density of the IC circuit design, means that in the same size area of the IC, you can have a higher density, more complex function of the circuit design. The development and progress of microelectronics technology is mainly based on the continuous improvement of process technology, which makes the feature size of the device continue to shrink, so that the integration degree continues to improve, the power consumption is reduced, and the device performance is improved.