What does introducing the same culture look like? It seems given that if we just hand everything over they'd have no reason to spy but it's less clear what would incentivize them to do the same or why combatting espionage is to cumbersome to continue.

Most scientific research is published openly, for everyone in the world to see. This is also true of scientific research conducted in China. Chinese institutions are now among the largest generators of scientific papers in the world (including in top journals, which is an indication that there is a large amount of high-quality research coming out of China these days).

I couldn't entirely tell if you were being sarcastic so I just figured I'd reply as though not. But, why can't the "truth" be propaganda? The presentation and presenter of a truth are just as significant for steering discourse and mass understanding of a given fact as the fact itself.