The Green Book is a film based on a true story, delving deep into the issue of discrimination against black people in 1960s American society. The protagonist, Dr. Don Shirley, is a courageous pianist embarking on a challenging music tour through the racially divided South. Accompanying him on this journey is his chauffeur, Tony Lip, an Italian-American bouncer. Over the course of the 8-week tour, the two could develop a close friendship by experiencing and overcoming various difficulties together. Space and music/language play crucial roles in their relationship. Specifically, space serves as an index of discrimination, exclusion, and segregation, vividly illustrating the challenges they face. It was impossible for both black and white people to share with some places such as restaurants, hotels and toilets. However, Dr. Shirley's classical music emerges as a powerful tool for bridging this gap as well as a form of communication that deeply impacts Tony, helping him understand the struggles of African Americans. Despite the hardships they encounter, their bond deepens to become lifelong friends. In conclusion, slavery's indelible scar on American society inflicts endless trauma upon Black people, persisting in the ongoing struggle for equality.