The point is that if you sanction a country like DPRK with a weaker industrial and technological base, you can cripple them very severely. China is a much more advanced country. Them being sanctioned in the realm of 5G chips led to an initial slump but eventually they ended up becoming capable of manufacturing their own chips which in the end is a huge win for China.
Moonofalabama had a short post about this earlier in case you wanna read it: https://www.moonofalabama.org/2023/08/huawei-chips-demonstrate-the-perils-of-technology-protectionism-.html
