I very much agree that having domestically developed hardware and software is far safer. For most governments this is simply not an option since only a handful of countries are capable of developing their technology stacks. I imagine in case of China, this must be a huge undertaking given the size of the country. It's definitely better to do it sooner than later though.

China does have a number of domestic designs based on RISC-V architecture, and they also have their own Linux distro that's already being phased in since 2022

• https://en.wikipedia.org/wiki/HiSilicon
• https://www.hpcwire.com/2023/11/13/chinese-company-developing-64-core-risc-v-chip-with-tech-from-u-s/
• https://techhq.com/2022/07/open-source-china-linux-kylin-kernel-desktop-de-microsoft/