"because Chinese labourers have more skills now and can command high enough wages in more upmarket jobs that they don't need the low end work any more" I think

"because Chinese labourers have more skills now and can command high enough wages in more upmarket jobs that they don't need the low end work any more" I think what is happening is that the low-skilled laborers can now earn higher wages in service (such as online shopping delivery) because the higher skilled labor force can now command a higher income and generate demand for more service. The point is while the overall skill level is up it is not necessary for the low-skill section to also have higher skill in order to have higher income. This has already happened in the developed economies, but people here seem to look down on these service jobs and pine for manufacturing jobs.