I don't understand why people expect the Chinese economy to crash - they can basically make everything, a lot of which is internationally competitive, they can trade for the resources they don't have with the goods that they do - with basically the whole world dependent on them. They have a huge internal base of poor people, and lifting them to a middle class level will alone fuel domestic demand for years to come.

Their biggest problem seems to be they're too good at building stuff, whenever a new category of product pops up, they quickly build up both volume and drive down prices through competition so that they saturate their internal markets (see: housing, EVs)