Just keep in mind that it is VERY normal for local pilots to leave their families and significant others at home and only see them only 2-3 times a year on a long stretch. Kids are being raised by grand parents etc. The whole system are based on the migrant workers lifestyle. Therefore, most Chinese airline managers see no problems with that kind of schedule. If they promise you month on month off, especially on a legacy airline whose managers came up under that kind of schedule, I would think twice.