This is an interesting development.
If SMIC is sanctioned, it might as well supply Huawei with 14nm microchips.
That would keep Huawei competitive in the mid-range smartphone segment.
Although there is a question about how well SMIC could operate its 14nm production line in the face of sanctions.
SMIC operating costs are less than $4 Billion annually, so it would be peanuts to keep SMIC operating whilst it develops an entirely Chinese semiconductor supply chain.
Yes, and it will take some time, but it is doable.
Plus you see a lot of commentary that SMIC or Huawei will go bankrupt because they are sanctioned.
But that is not going to happen, because the Chinese government will support them until they can develop alternative Chinese technology.
And come to think of it, SMIC might as well become a major semiconductor supplier to the Chinese military now.
So the sanctions don't make sense if their goal is to punish SMIC for supplying to the military.