but my question is why does the shutdown in China matter?
You have to know-America in the title of superpower-China is worse than America-China is the country of the internet-industrial grandmother/grandfather, they can manage all that-you see they make the sun.
If-you try a little-to learn about chinese technology you will realize china is very important in terms of (shutdown)-he can manage everything, except Bitcoin, but they can cut off access to crypto transactions-especially their country-so obviously China is important in this matter.