In the 1980s, China just began to research chips. At that time, the integrated circuit was the size of an egg, and gradually became smaller, and I have seen an integrated block with an area of about four square centimeters, which is said to contain thirty or forty transistors. This was considerably more advanced than the individual transistor combinations of the time.
At that time, Chinese chips were a blank, which was the most basic technology. They are also accumulating basic skills.