BEIJING : This Dec. 21 story has been corrected to clarify that the ban was on the export of technology to make rare earth magnets and that the ban on technology to extract and separate critical materials was already in place, in paragraphs 1 and 6. It also removes context and the comment on rare earth processi
What it implies to stretch the DUV process into ever thinner lithography: https://www.youtube.com/watch?v=Th4E-0VFaEA
Some background on how it was made: https://arstechnica.com/information-technology/2023/11/how-huawei-made-a-cutting-edge-chip-in-china-and-surprised-the-us/
tl;dr/dw: China managed to produce small batches of semiconductors using stockpiled american and japanese equipment before sanctions kicked-in