The same reason TSMC cannot just hand over the blueprint of its semiconductor fabrication to the US and expects them to be replicated. This kind of technology requires many decades of expertise and very skilled personnel for production.
There is a reason why Russia continued to export its military equipments even after the fall of the USSR - if they had stopped at any point over the course of the past 30 years, those expertise would have been lost forever. The dilapidated military industry was kept afloat by the occasional buyers of Russian military hardware.
In other words, Russia needs buyers to stimulate their defense industry. China is welcome to invest in the Russian military industrial complex by placing large orders on their equipments. In fact, Su-57 is currently flying in Zhuhai hoping to entice the Chinese into purchasing them.
Dollar’s Enduring Appeal on Show in China’s Sovereign Bond Sale
Unfortunately saw this coming for a while now. Nothing’s good gonna happen when Saudi Arabia is involved. I have said before that Saudi Arabia (not in BRICS yet) is going to play the role of dollarizing BRICS, not dedollarizing it.
China’s economy is going to do fine, but de-dollarization and challenging US imperialism are going to take a back seat for now.