Ministry of Commerce Order No. 1 of 2021 to Block Improper Extraterritorial Application of Foreign Laws and Measures
For that to work, Huawei, as the one who suffers damage, has to initiate the lawsuit.
But it's not doing it. Even thought law came out, theres nothing happen.
TSMC has very long relationship with Huawei. Yet it stopped supplying Huawei.
There are many others still stop supplying Huawei and nothing happen to them under this Chinese law.
If Huawei not willing to do anything, then this law is rather useless.
If Huawei doesn't come out to challenge SMIC , SMIC probably will tell Huawei it's waiting for US approval. Still waiting would be the excuse.