I am moving from Colorado, USA to Shanghai China. In my state it is legal to smoke marijuana and I do so because of its calming effects. I smoke about 1 joint every 2-3days. I will NOT smoke in china and understand the risks while in China, but I am curious about the medical exam for residency. Do they test for drugs on the medical exam. I called a few hospitals and was informed there isn't a drug test but it could be requested at any time. I'm curious if anyone else smoked previous to the medical exam. What were the results?