TikTok can be your window into China's foreign politics. You just have to recognize what content bypasses its robust algorithm.
A video with nature? — Sure, I love those. Japanese women being cute? — Yes, please. A Family Guy episode? — Of course. A video in support of Ukraine? — Definitely, always promote those. A video about linguistics or outer space? — Cool, let's check it. But then you do another swipe, and there: "Hooray! Some rich guy in America gets murdered! Proletarians of the world, celebrate! Proletarians of the world, unite!" — What is this shit? I never interact with it, often press "not interested" even, but it keeps popping up.
That's how I knew China wasn't really interested in helping Moscow with its propaganda: TikTok never promoted it (russian retards spamming in every comment section notwithstanding). It was sometimes shown on YouTube, more frequently on Instagram, but never on TikTok, for some reason.
There are two major projects on TikTok that I see consistently bypassing the algorithm. One is to brew class division inside the US. Another is to promote a positive image of China. There could be more, which I don't discern, or which appear under different circumstances.