There were also issues getting the light sufficiently collated from a synchrotron. This Asianometry talks about the engineering: https://www.youtube.com/watch?

There were also issues getting the light sufficiently collated from a synchrotron. This Asianometry talks about the engineering: https://www.youtube.com/watch?v=5Ge2RcvDlgw https://www.youtube.com/watch?v=5Ge2RcvDlgw Now, China may decide that it doesn't need throughput and that will definitely help. Having a facility that can simply do it even if it can't do it at speeds that a commercial fab would accept would be fine for strategic reasons. However, it will be 20+ years of engineering. And that's just the light source. The optics, for example, are a whole other engineering project.