For medical school specifically, the usual pre-med things that apply no matter what college you go to:
- Earn high grades, particularly in pre-med courses (biology, chemistry, physics, math).
- Earn a high MCAT score.
- Do the usual pre-med extracurriculars.
- Do the other things recommended by the pre-med advising there.
- Also, keep practicing the Chinese language. It may be useful in a medical or other health profession career in some places.