What will happen to the Bitcoin world if China physically shut down its internet connection to the outside? (reddit.com)

Just hypothetically, if the internet connection between China and the rest of the world is cut off, how much mining power will be lost during the process? What will the distribution of mining power be for the part outside China? Will this cause some chaos in the Bitcoin world? I’m not sure whether someone has asked similar questions. It would be great if you can point me to some of these discussions if they exist. Thanks!