They don't even have to do that, what they need to do is make it a policy to export their top social media platforms in the form of an separate international version. This way China can control the platform and manage the information streams on those platforms and slowly erode away Meta and googles strangle hold on the worlds information streams in the form of youtube, facebook and instagram.
US social media platforms have no "international version",the US version is international version,the platform follows US law and the content is US centric,US domestic news will always be front page.
Chinese social media platforms all have "international version",the headquarter and datacenter of these "international version" is not located in China,they don't follow Chinese regulations nor the content has much to do with China.
The result of this is obvious,Chinese platform has much less power to project Chinese influence over the global compare to US platform. Their oversea operations are purely for profit,not much else.
Heck even Chinese games all have "international version",there is nothing in Chinese digital space that has does not distinguish "domestic" and "international". Which all thanks to the great fire wall they are forced to do so