Probably.

It's hard to say, I don't have a time machine, and there's a lot of butterfly effect stuff.

But I'd imagine the KMT and CCP would be still be on speaking terms, maybe.

I mean, I see these timelines: (Keep in mind, I'm not an expert in history)

1. If Japan never invaded, and Sun Yat-sen died at the same time as current timline, KMT would've won the civil war. They wouldn't be in the aftermath of suffering from the massive losses fighing the japanese imperialists.

2. If Japan invades, but Sun Yat-sen was magically kep alive this entire time, I guess there might've been more cooperation during the resistance against japanese invasion. As for after the war, it's possible that:
   a. the KMT beomes majority ruling party, and CCP is a major opposition party, and maybe there would be elections... Or maybe the democratization doesn't happen until like a decade, or 2 decades, or maybe much more later. I imagine there is a timeline where perhaps in the alternate 2025, CCP is one of the political parties in a sort of Taiwan-like multiparty democracy. Perhaps it could splinter into multiple groups, Democratic Socialists, and hardcore "Communists". I'd imagine there's also be some people who are more militant and probably launch random attacks sort of like the US's political violence. Perhaps like the IRA.
   b. Perhaps a hot civil-war goes off, KMT probably has an advantage because of Sun Yat-sen as the unifying figure. So if KMT wins, its probably just Taiwan timeline, but perhaps the democratization could take a bit longer than Taiwan timeline since the land is bigger, and also the CCP probably goes full "IRA Mode" and start doing attacks, so KMT might've used that as an excuse to implement martial law... so we might not see a a real democracy until like 2000s, there'a gonna need to be a lot of under western pressure to do this.

Just my theories, a historian probably think a lot differently.

TLDR: I don't think the internet censorship would be as harsh, or perhaps the censorship wouldn't exist at all. No great leap forward, likely no One Child Policy. More time spend on actually fixing the country. Possibly multiparty democracy.