China is hypercapitalist but with a top-down command economy that is communist/socialist. They basically have the best (worst) of two worlds. Now they have technofascism added to it with their social credit/digital ID system that ensures that nobody will challenge the government and that everyone will be obedient consumers in a captive monetary market. Neo-liberalism has enabled it and is allowing it to gradually proliferate to the rest of the world. The connection to radical leftism is the erosion of the rights and liberties of the individual and the subjugation of the individual to the group, through identity erasure and group-think-speak. It has mostly been proliferated by the academic institutions, which is exactly what happened in the communist revolutions in Russia and China. The students became the vanguard, the ivory tower became the precursor to the politburo. Those all come right out of the playbook of socialism. Furthermore, attempts at tearing down real institutional and political power structures that have maintained western hegemony for more than a century are being disguised as "dismantling systems of oppression". The right wing isn't destroying our institutions, the left wing is. For example... modern leftism supports porous borders, and it was recently announced that tens of thousands of Chinese people are now illegally entering the U.S. through the southern border, when this never happened before. How many of those Chinese are government agents?
There's no rhyme or reason to be doing business with China, especially as they routinely steal our intellectual property and then weaponize it against us. Virtually everything they know that is currently a threat to us, they got from us. Their centralized polity and social conformity stifle all creativity, so they have to steal all their ideas from us. And before somebody calls me a racist, I lived in China for three years, I speak Mandarin fluently, and I am extremely well versed in what goes on in China.
What you're actually underscoring is globalization, which has allowed for the bypassing of human rights and worker laws by outsourcing. It could've been easily prevented by the western nations punishing corporations for outsourcing to countries that violated their domestic human rights laws, but money spoke louder than human rights, and people in the west want their cheap, plastic crap. Globalization is a neo-liberal institution foisted by leftism, because they view humanity as being "one world" some day, and all their institutional goals centre around that. And if you don't support that, then you are a violent oppressor, a nationalist, a racist and probably a fascist, and you should fuck off and die.