Hola Dongke,
I understand exactly what you are seeing and would like to have the hatching of the polygons within ArcMap. Within CAD the polygons are typically reflected as hatching and most of the time not true polygons. The question I would need to ask first, if the hatching within ArcMap are represented as true polygons? If they are then all you would need to do is within the properties>symbology tab you can click the symbol and then assign a fill which would reflect a true hatching of your choice. If this does not reflect as a true polygon within ArcMap, then you will need to create one within ArcMap in an edit session, and then apply the fill to reflect as a hatch. Please let us know if you have any further questions. Gracias, Dongke!
