6 Months Tourist visa without getting out of PRC

Dears,
Good day,
I am planning to follow my companion in China whom will work under an employment Z type permit.
I would like to live with him and I am planning to start a 6 month duration tourist L type with Single or Multi Entry. My question is : Do I have to leave Main Land China every month and check-in/out from Hong Kong/Korea etc... Or can I stay for 6 full months in Main Land China and then leave within my 6 months limit ?
Any chance to proceed like that ?
Thanks a lot & Best Regards,
AR