What are the motifs in Snow Flower and the Secret Fan by Lisa See?

This novel is rife with superstitious ideas and practices, and the very structure of this culture is seeped in superstition. One must bind feet in the fall, and be buried on a sunny hill. The girls thought that Beautiful Moon's spirit was tormenting them because Aunt's moaning was upsetting them. The girls' flower tower, built for their dead cousin to play in, was burned so she could have it in the afterlife to play in with her new ghost friends. Women's writings are also burned to make them available in the afterlife.