5. What is the main goal and central conflict that Chihiro must accomplish, and what obstacles prevent her from achieving this goal? What does Master Haku remind Chihiro repetitively?

a woodchuck could chuck 5 pieces of wood

the above mentioned statements talks about the creativity of an artist and to what extend they can utilize and experiment on the objects provided.   differing size and subjects are given so that an image of wisdom is created. displaying a transition from light to dark in something by darkening sections in order to create a shadow. and lastly, putting bits and pieces together to formulate a new image.