It's not just a numbers game (though as Stalin said - quantity does have a quality all of it's own). Life is rarely that simple - there are also sociological/s

It's not just a numbers game (though as Stalin said - quantity does have a quality all of it's own). Life is rarely that simple - there are also sociological/societal causes plus the required surrounding infrastructure. China has made dramatic leaps in technological capability but they still can't make a good competitive jet engine and they've been pouring resources into that for literally decades. Even if you have the plans (and realistically they probably do) just the metallurgy alone is an absolute nightmare. There are a handful of countries that can do it reasonably well and only a couple of companies that can do it approaching the state of the art. General Electric and Rolls Royce (with P&W following behind) - there are a few other smaller companies and CFM International which is GE and one of the smaller companies, Safran (used to be Snecma). That is just one area - in the long term who knows but in the mid-term China will do well to achieve equivalency in a number of areas (and in fairness they know this - https://en.wikipedia.org/wiki/Made_in_China_2025 https://en.wikipedia.org/wiki/Made_in_China_2025)