Let's start with the operating system. Now we all use Microsoft's windows system, which is based on x86(x64) architecture, that is to say, to use this system, the CPU must support x86(x64) architecture, but now the patented technology is mastered by intel and AMD, and the two companies authorize each other. And constantly update the technology, that is to say, if the domestic CPU wants to put into the market, its performance can only be the same as that of Intel and AMD ten years ago. This thing will be out of date in five years. /kloc-who used it 0/0 years ago?
If you say you don't need an x86(x64) architecture system, you need to re-study the system. Now that windows has penetrated into thousands of households, office, CAD and other software will not support the new system so quickly, so it is almost impossible to realize domestic systems, so it is basically difficult to realize domestic CPU.
In addition, the mobile phone CPU(ARM architecture) is made in China, and the Haisi Kirin developed by Huawei is still good. At present, it has surpassed MediaTek and may become the third mobile phone processor brand in the word world.