https://en.wikipedia.org/wiki/Shanghai_clique

I am not a historian, but I have always found diversity of thought inside large political bodies: Communist Party of the Soviet Union, Jimintou, etc. Surely if you have a large political party where you are from, you have also seen that they have factions as well?

Painting a great picture of party unity - and national unity - is a key propaganda goal of the CCP, so if that's what you see then they are succeeding. In practice, the party has almost 100 million members so naturally it is composed of people with many different points of view, although those differences are rarely expressed openly and they're all still shaped by the overall political and educational environment of the PRC.

It's generally accepted that Xi Jinping has used his anti-corruption drive to wipe out rival factions, and one unlikely conspiracy theory is that he somehow orchestrated Bo Xilai's fall from grace in 2012 so he could take control of the party. The whole thing could provide material for stacks of palace intrigue thrillers... and in fact it did, which resulted in the Causeway Bay Books disappearances of 2015. Gotta control that narrative, after all.

If you're interested in the propaganda side, I recommend reading China Media Project: https://chinamediaproject.org/ If you just want to know about the party maneuvering, all the usual thinktanks (CSIS, Brookings, CFR etc) publish a ton of English language content.