Place one of the wrappers in a bowl of warm water until softened and opaque. Shake off the excess water and lay on a plate.
Place the carrot, Chinese leaves, bean sprouts, coriander and prawns in a bowl and mix well.
Brush the middle of the wrapper with fish sauce, lay 2 mint leaves on it, then place one-third of the prawn mixture in a line down the middle. Fold in both sides of the wrapper, then roll up tightly.
Cover with a damp cloth and repeat with the remaining wrappers and filling. Cut each roll in half and serve immediately with the dipping sauce.