Just a hunch.. They get to build all the electronics and many of the cars/goods sold in stores.
The trend is your friend. They can bankrupt US land holders and steal the land for pennies on the dollar through corrupt politicians.
You did hear about China building a city in the USA south of Boise right?
Idaho Gov thinks this is good.
Never, ever invest with money you need to survive on. Never ever put all your money on one bet. Diversify or die and have patience, while setting tight stop losses. $20 or less in commission fees is almost always cheaper than a 5-40%+ drop in share value.