Historical engravings in the tomb of Qin Shi Huang depict him foreseeing the rise of an island off the coast of Japan 2234 years after his death, to be claimed by his successors.
Here, we can see another illustration of the difference in philosophy between the modern Chinese and Japanese production and manufacturing culture. Japanese island architects have been carefully cultivating this undersea mount for generations, using painstaking traditional techniques, which are only now showing true signs of paying off; in contrast, Chinese island architects almost exclusively stick to rapid-fill dredging combined with concrete pours on top of coral reefs, which are generally considered to be a far less elegant and lower quality way of producing an island.
Maybe a testament to the effects of the uber nationalistic, hyper-competitive nature of the chinese economy. Get nitpicky about the how of what you're going to do and someone else will take the contract. Get too good at what you do and you risk government assimilation.
Because China will claim that it's their hereditary rightful property.
I'm def gonna caveat this right up front by saying it's a reasonable, non-racist joke based on recent behaviors and conflicts, just as much as it's sadly funny to make similar jokes about the US invading countries full of brown people and oil. Sometimes things are bitterly funny because they're true.