Who is Jung Chang from Wild Swans: Three Daughters of China and what is their importance?

Jung Chang is the author of the book and the third of the "three swans". She was born Er-hong, named by her grandfather upon learning that he had a granddaughter. She grows up in China amid political unrest that was common through a great deal of the 1900s. Her parents are both high-ranking Communist officials and it's her father's teachings that shape many of her ideas. As a child, she is riding in her father's state-provided car when she sees classmates in the back of a truck. She's embarrassed and her father is pleased that she hasn't taken the privileges of her life for granted.