I think, before any chip maker in Taiwan is taken by chinese forces, their factories and laboritories might explode for some reason or another. I don't think that China can take them without catastrophic loss of very expensive and sensitive equipment that requires very specialised workers they don't have. All of these things can't be replaced in a reasonable time frame, especially at war.
If China follows through with an invasion, they might be after something else.
So you saying, just the tip?