fillipino gf visiting or moving to china

i am british passport holder ,and currently hold z visa for china,i have fillipino gf living and working in hk as housekeeper,my question relates to is it possible for her to visit china and stay with me for a period of time,and also if we where married would she be able to live with me on a permanant basis in china as long as my z visa permits me to work here,any help regarding above is much appreciated
paul