Indeed, China preferred buying from external sources as merchants won the debate on whether to buy or to research and it's indeed cheaper in short term. Depend

Indeed, China preferred buying from external sources as merchants won the debate on whether to buy or to research and it's indeed cheaper in short term. Dependency on critical parts from external could be the only viable solution for smaller countries, but for countries like China is a intolerable risk to national security and has to be addressed at highest priority. The embargo just demonstrated how bad it could be, and it actually can be much worse in different contexts. So, obviously R&D is the only option left on the table. Cost is no longer a problem.