I did it using Custom location types.
First of all, publish a map service(feature service also do) using China Province spactial data.
then,open "add location type" dialog in excel,search the map service that you published,
next,choose columns within the data,f.g,zip code�?�the name of province�??
finally,named your location type.
then you can generate polygons with Chinese zip code and the name of province.