[Arbalest]

People clearly don't feel like there's anything they can do about the PRC, but BLM being a domestic matter (at least for USAiens) is something they might be able contribute to. Hong Kong is especially in trouble though, in practical terms. China cannot back down on the national security law if it wants to keep looking strong, both externally and to its own populous. So that makes for two scenarios.

1. Hong Kong loses its status as the gateway into China by being undifferentiated from the rest of China. This is the way it is likely going at the moment.

2. Hong Kong becomes independent and definitely is not a gateway to China, and actively hostile to boot. In addition it loses the cheapest route of supplies across the land border. It doesn't have enough land to support its large and dense population. This is particularly the case for fresh water.

Xinjiang is not better, being landlocked and with basically zero economic importance. At least it has some land though.