I'm glad. There are still people here who are willing to seriously confront technical issues.
Regarding the GaO AESA technology, China is also in a trial state at the moment. At the moment In this field, Chinese research organizations have already achieved a lot. Root For GaO chips, SiC is not the best substrate material. According to public information, Chinese scientists have started to use diamond as the substrate material for GaO chips to make chips. (Yes, it is indeed diamond. But, it's artificially cultivated diamonds.)
If you are more interested in China's cutting-edge aerospace technology development, I can recommend a website for you.
Chinese Journal of Aeronautics
This is a purely academic site. It has a very large number of academic papers. However, you need to know some Chinese, and translation software doesn't translate these completely accurately.
As these academic papers involve a large number of state secrets, they are made public with varying degrees of “technical treatment”. Therefore, you can read them with peace of mind.