Far Easterners (at least in the distant past) don’t have the Western drive to conquer the world, seeing nature as a friend instead of an enemy as Abrahamic teachings have hammered into the Indo-European world for 3-4 millennia.
Think of those guys as the high elves from Lord of the Rings: just sitting on their asses for centuries, painting and playing their flutes and drums trying to be at one with everything.
Lack of competition.
Europe was comprised of many states constantly fighting with one another and any new technology that might have provided a potential advantage over competitors was exploited to the max.