I can actually see the veins in the veins...

Born with shallow blood vessels, and fat and thin has nothing to do with, because I used to be fat into a flying column when you can see the blood vessels, in the darker light lines will be more obvious, the needle is very convenient, usually the hospital will let the trainee nurses to give me a needle, may be good to practice... but once the nurse gave me a puncture, the needle out of the other end of the...