The full name of the Green Book is "the negro motorist green book", which means a safe travel guide for black travelers. Its slogan is "Now we can travel without embarrassment." In 1936, Vic, a postal worker in the black community of Harlem, New York, died. Behind the convenience of the Green Paper, it actually pointed to the "separate but equal" apartheid policy in the South at that time. After the Civil War in the 19th century, although slavery in the South was abolished, it did not change people's "whiteness."