第二次拒信如下
You do not appear to have had any overriding commitments-sucha as a child - to make demands on your time. You only obtained work as an auxiliary nuse during the latter part of your stay. There seems no rason why, if you were keen to undertake studies, that you should not have done this during your time in the uk. The fact that you are choosing to do this now leads me to doubt your intentions or that you will indeed follow your proposed course.
Additionally , you have not shown that you have sufficiently strong economic or social ties with China to satisfy me that you intend to leave the UK as stated. And, as you admit , you are aware of the substantial economic benefits that may be obtained from working overseas.