According to the regulations, if you leave the country as emmigrants,
-tiange(tg);
2000-6-4{236}(#1227@0)
your LP will be checked at the boarder inspection point, and you have to have the "yi2min2" exit card stapled onto your passport. To get the yimin exit card from gonganjv you should cancel your hukou first.
That is, therectically ...