What is the author's style in The Good Earth by Pearl S. Buck?

The novel is a realistic one but also on occasions employs imagery and symbolism. The traditional Chinese practice of foot-binding, for example, is used as a symbol of Wang Lung's desire to improve the social status of his family. The binding of girls' feet over a period of years resulted in a deformed foot that sometimes was no longer than three inches. Foot-binding was a painful process, but a small foot was considered desirable.