In Suzhou rural areas on their own land to put movable container room belongs to illegal construction?

Should be counted, but each place seems to be a little different, my hometown (rural) to build their own new house, it is necessary to build in their own previous foundation, other places of the foundation is not allowed to build. I don't know how the government regulates it, but it's really like that in my hometown, because my neighbor bought a piece of other people's land and was going to build it, but the government prevented him from doing so, and my mom told me about it. So I think you put a container on your own land is illegal, but if the government does not interfere, then it does not matter.