Communism

China is Socialist, so it already suppresses the bourgeoisie. Russia and Iran are nationalist, but this nationalism also puts them at odds with western Imperialism and towards countries like China. Aligning with the Western bourgeoisie against Russia and Iran weakens the chance of them becoming Socialist, as it would likely result in an opening of their markets to foreign plunder and perpetuation of Imperialism. On the other hand, by siding against Western Imperialism, they become more integrated into the Chinese side of the global economy, pushing them towards Socialism.

I wouldn't say Russia and Iran are friends, they certainly aren't Socialist by any stretch, but they can be depended on insofar as they work against the system by which the West collectively loots and plunders the Global South, depressing its development.

To be clear, the ruling class in the PRC is the proletariat, it's a Socialist country. Further, Russia and Iran's ruling classes don't have the same Imperialist foothold holding the entire Global South down that Western Countries do. They will need Socialist revolutions, but as Imperialism is the world's greatest contradictions, it's more important to thwart US and Western European hegemony than it is to side with the Empire against bourgeois states that are nationalist in character.

You are getting downvoted but are absolutely right. I have nothing agains Russians, I do have something against Putin invading Ukraine, Georgia etc. I have nothing against Chinese people, I do have something against Xi and what he is doing against the Uygurs, or what he did to Hong Kong and might do to Taiwan. Just like I don't have anything against Americans, but I have a lot against Trump.

1989 Tianenmen Square ~~massacre~~ insurrection

The equivalent of this would be 1000 US caucasian student communists showing up on Freedom Plaza,
demanding that Confucious Institutes be reopened while building statues of "Chairman Háu!",
and singing how oppressed they are if those institutes are not build for them,
then do a Trump style insurrection and continue to kill when US troops arrive,
which not even the Jan 6 insurrectionists dared to do, because the government,
instead of sending armed soldiers, send in their army choir
to calm everyone down and have them peacefully removed from "the plaza".

Instigators had been shot dead.
And dozens of innocent people died in a state of confusion in the outskirts of the city,
with protesters not believing the insurrection happened
and soldiers demanding confescation of public transport to get to the square
to prevent a potential coup from happening.

Then, when all is said and done, China starts calling the Jan 6 insurrection,
the Freedom Plaza massacre, despite all the action having taking place at either Capitol Hill or JFK airport.

Soviet gulags

Holdover from their imperial days, increased in use during world war I and II prisoners,
then got dismantled to a few until the last one closed down in 1987.
That's at least 38 years before the US, as the US still has forced slave labor camps all over the nation.

Russian war on Ukraine

Ukraine is an artificial state created by Russia from its own territory and Polish territory.
Kiev being Russia's first capital like Philidelphia was to the US.
A coup happened in Ukraine and Oblasts (states) wanted to secede because they didn't recognize
Poroshenko as their president since they declared themselves as Russian and demanded referendum,
that was violently blocked with lethal gunfire killing voters at the polling stations.
In response the seperatists declared secession and asked Russia for help.
Russia demanded Ukraine to hold a cease fire so a referendum could be held.
And after 8 years of Ukrainian presidents, including Zelensky who platformed on the
promise that he was going to be THE president that would bring cease fire and being
elected on the basis of that promise, after 8 years of only increasing the suppression,
Russia did a small invasion to tell Zelensky that they would really appreciate a cease fire there
and promise that it would never join NATO.
Zelensky agreed, but then Boris Johnson showed up the next day saying that the US and EU
have got all their weapons ready to arm Ukraine with whatever he wanted that the EU has,
so he would fight with all the weapons of all of Europe, excluding Russia and whatever the US
was willing to give, basically turning it into a world war and Zelensky agreed.
So basically a semi-world-war has been started by the US/UK, because they refuse a small portion of a half-Russian nation
to hold a referendum so that they could leave, because they thought a coup was undemocratic and didn't like an oppressive anti-Russian regime change when they themselves are Russian
and viewed as Russians, not just by themselves.

Iran is quite lacking on human rights too.

Iran has had countless of attempts by the US/UK to recoup the country
after a pro-sovereignty countercoup ended the rule of the Shah.
All "human rights violations" are simply retaliations against deadly attacks by paid protesters,
and CIA-astroturfed bestseller authors.

Meanwhile the US is deploying the military because people protested against police raids that deports legal immigrants out of the country and before that protests against their regime deeply supporting a genocide.
These reactions and types of protests are incomparable.

And you can see how incomparable they are when you just look at the protest chants and media pictures taken.
Hong Kong protests for example came out of nowhere, used the flimsiest excuse to overthrow the government,
with false claims and demands that far exceeded the Jan 6 insurrection claims and demands and just happened
to be hyperorganized with its leaders constantly flying to the US to pick up awards.

Imagine US protest leaders flying to China to pick up human rights awards for protesting...