That would just invite a blanket ban on TSMC manufacturing EUV chips using Chinese IP.HiSilicon sells the Kirin chip design to a third company (with the stipulation that it can be purchase back by HiSilicon, that option has to be in the contract). Someone goes ahead to procure that chip.
That is what I believe is happening here. The Chinese strategy is two fold.
1) The main plan is still China 2025
2) Dare the Americans to sanction everyone, as that may not be possible, as that could break the entire US China trading relationship, something that the USA does not want to happen.
Maybe when the Americans are distracted by trying to restrict Huawei access to chips, the Chinese IC industry can find some parts.