Am I eligible for the 72 hour visa transit from USA?

I really need help. I am planning on travelling to Israel from Chicago and would like to make a stop in Beijing to go visit a factory for 3-4 days in Cangzhou which I was told by my friend that on the "high rail" take 45 minutes and is 260kilometers away from Beijing. So my question is if I am eligible for this free transit? am i allowed to go to Cangzhou or can she pick me up from the airport?