Lin (to appear) points out that although dao "arrive" lexicalizes a closed scale, it does not specify information about the direction in which a moving object moves to the reference object, nor what kind of reference object is involved in the motion event.
the other two-  point closed scale motion morphemes such as jin "enter" and chu "exit" are highly specific about the reference object and path: jin "enter" expresses a boundary-crossing motion event involving motion from the outside to the inside of an enclosed region, whereas chu "exit" expresses a similar event in a reverse direction.