20 years old, what can I do until I turn 21 to prepare?

I'm suprised the chinese army didn't kick your door down after posting that

 

They love me! Needed to see a doctor so my wife's doctor said,"Your a U.S. Navy veteran, go to the Chinese PLA Navy Hospital." She made a phone call & I went there and was treated like royalty. The elevator operaters are beautiful Chinese women that are in the Navy in full dress uniform and they just giggled because a foreigner and U.S. Navy vet was in their elevator.
No one asked me any questions about the military & the medical personnel are very professional and polite.
China isn't at all like the politicians want everyone to believe. It's a pretty good place to visit and live and a single mans heaven. I'm fortunate that I can switch back and forth between the two countries anytime I want.

 

I know that's the truth. Just busting your chops