What were the material differences such that the USSR was able to use central planning to develop their economy into a superpower, while the Chinese economy struggled to alleviate poverty without seeking foreign investment?
(I get that the question presupposes legitimacy of the Deng reforms and I am too much of an ignoramus to argue one or the other, so if you think the question is a fundamentally incorrect one I'm interested to know why too)
Internal resource? Is China have that much natural resources to begin with. Like, there's a reason why they have to buy resources from Russia, Australia and middle east. Even then, they need outside investment since they just finished civil war and kind of backward, needing to catch up fast.