Communicate with your sponsors, there are many projects that will keep you as busy as you want to be; whether you want to be part of the education, assisting the teachers with the English language, or helping a family with caring for their child/children. You will have many opportunities to choose from; this can all be discussed with your sponsor, let them know what you are more interested in. There are a variety of projects from teaching children, teens and adults how to speak and use the English language, helping with childcare, educating individuals on making healthy lifestyle changes via health education, animal care, and international volunteer to name a few.
If you are a student, you have an opportunity to gain first hand work experience, you can volunteer in a project which is related to your area of specialization or interest. This will give you the real exposure; you will gain skills and at the same time know how to handle people from diverse backgrounds. This is a real opportunity for personal growth; you will not only be preparing yourself for future endeavors but also taking your time to experience different parts of China.