PetroYuan or PetroBitcoin is the future. China will use more oil than America for the same per capita consumption. However, China does not have strong military.
China does not have strong army? Are you kidding? Their army is 2nd in the world right not. And probably will be first in matter of years now.
Soon they will have everything (top army adn economy) to back up yuan and petroYuan will be real.
Chinese military is weak. Personally, I wouldn't put them even into the top 3 strongest (toughest) armies. Japan would knock them back into the Stone Age (again) if they were given such an opportunity...