China is none of the above outside of a definition of imperialism I think most of the newcomers here, and certainly anyone making those claims, would be unfamiliar with.
The combination of those claims suggests a highly xenophobic sourcing that has little to do with understanding China and a lot to do with a new cold war mentality that exploits Western, and particularly American, ignorance of other countries, e.g. being successfully targeted by the Western-facing Radio Free Asia government-affiliated media and/or the related complex of think tanks and hacks that get mileage not because they’re well-grounded in knowledge or academic work, but because they vilify the new “enemy”. This is in no way new and Westerners never seem to acquire generational skepticism, instead always getting duped into the intended hatefest, even while acknowledging they got the last ones wrong (e.g. Iraq, Afghanistan).
Those claims are also highly projecting, as many do describe many Western/ally countries and cynically draw from a misuse of the language of the left.
Imperialism, particularly as an accusation like this, is about the forcible export of capital such that capitalist exploitation becomes transnational, witg structurally underpaid labor being extracted from one country to the one exporting capital. This is closely tied to the colonialism of Europe and America, but also applies to “inter-imperialist” conflicts. China lacks the apparatus to coerce, an apparatus that absolutely is used by the US and its clients to vilify and destroy countries not falling in line, as well as accept IMF terms that neoliberalize their economies. Rather, the left critique of China on this is more often that its survival strategy (which is working) requires the exploitation of its own labor and the import of capital. Luckily, this is changing.
China is simply not an ethnostate, this is pure projection and orientalism. Chins is an explicitly multi-ethnic country snd has widespread state support for ethnic diversify and what would be described by Westerners as affirmative action programs that are more generous and effective than Western ones. Attempts to pretend that being Han is akin to whiteness are absurd and, in addition to mischaracteeizing China, bely a problematic ignorance of how white suoremacy was invented, and why it had to be invented, as those histories don’t apply to the Han in China. The simplified version is: it’s a condition of racialized labor divisions to feed capitalism and particularly European colonialism, and in the US, settler-colonialism. You can find a modern ethnostate in Israel, a Western forward base and settler-colonial project engaging in apartheid.
Re: totalitarian, this term means very little as an accusation and is so overused and selectively justified that in this context all one can really infer it to mean is “bad”. Often, it relies on a false consciousness of coercion or societal violence that arbitrarily vilifies state violence while tolerating the private violence ubiquitous in countries dominated by the capitalist class. Example: it is “totalitarian” for there to be government censors on certain topics in [bad country], but not totalitarian for stories supportive of ruling class interests to be favored by privately-owned media (i.e. the dominant media in the West) and for those perceived as a threat to those interests to be systematically downplayed, unfunded in the first place, selectively misrepresented, and coopted and misdirected. Anyone active in, say, the George Floyd protests got to watch the lying happen in real time, with the cop-and-pricate-property-friendly “uncensored” media playing the lead role. Lazy accusations of totalitarianism are really just dog whistles for unexamined hypocrisy and a lack of awareness of the ubiquity of social violence.
Use something like rclone (that can use file change deltas) when you just need to copy files to remotes and feel free to combine it with an incremental backup solutions like Borg or restic or some custom rsync scripting. Example: keep a Borg repository of your laptop or emails or whatever with whatever retention policy you want. Then copy your repository anywhere with rclone or similar.