You can if every thing they want to buy is made in your country.
The US can't half the value of the dollar to boost exports because everything in Walmart that is made in China will double in price.
China can because everything it's people want to buy in GreatWall-Mart is already made in china. As long as the government steps in to subsidize imported fuel the people wouldn't notice as long as they didn't travel - and you don't want them to travel anyway.