There is a strong social expectation that the retired women will look after their grandchild, while their daughters and daughters-in-law go to work. The grandfathers pitch in with the babies, as well. That said, the Chinese government is planning to raise the retirement age, for obvious economic (as in economic realities) and demographic reasons.
I'm not feeling particularly worried about not knowing where I will be come this September. September will come anyway. And meanwhile I want to cherish these last few weeks in Zibo, because the world that surrounds me here, which was once so alien and remarkable, is now familiar and routine and frankly, has become a second home.