They are long term on many things, but not things that concern national pride. It is unclear what threat a semiautonomous HK actually presents to them, beyond just being a bunch of people near Shenzhen who can say mean things about you. It’s not like a rebellion could start there, they would be perfectly happy being left alone.
The threat of HK is that the mainlanders might start wanting some democracy for themselves.
In a way China made a mistake asking for HK back. While it was British they had a convenient boogeyman to point to, now it is part of China, Beijing has nowhere to hide, and the only option they have is to destroy it. This will be a painful process for both Beijing and HK.
There is a genuine fear of social disintegration if democracy were implemented in the mainland. Unfortunately, since Tian'anmen Square, the CPC has lacked leaders with the wisdom and guts to experiment with political reform and so now, HK's 1C2S is a threat that needs to be fire-walled off instead of an opportunity.
In terms of political culture, I don't think either side really understands the other.
