thanks for replay, I know how to find the rotate (R), what I am looking for is : the pivot is changed" how can I turn the pivot back to the center of object, from the image in right hand side you can see that the pivot is not center to the object, it is just in the middle of no where, when I try rotate or scale the object I cant get the right way that I want(as default way) because the pivot is not centered to the object, but in the image in left hand side i can , bcoz it is just has been made fresh, poly cube,

I found it today . when I create cube and I move it around, after I delete history , the pivot become like that, so how can I return it to the normal(default way) as left image?

I am in the middle of doing something , I notice that I got this problem, this image is just reference what problem I got,

need help guys,