As every foreign friends know, if you want to get Work visa/Residence Permit, you have to leave Chinas Mainland by these following 5 steps:
1) Apply for "work permit;
2) Apply for "Work invitation Letter";
3) Take this leter to leave Chinese Mainland, and Apply for a "work visa" in abroad, including in Hongkong, Macao, etc, this Z visa will valid for one month;
4) Apply for "working license";
5)Get "Residence Permit", it means change your "one month work visa" to a "12-month Residence Permit".