The coffee culture gradually expanded beyond Northern Vietnam to other provinces, each developing its own unique vocabulary for the word "coffee." For instance, in Southern areas like Saigon (now Ho Chi Minh City) and Quy Nhon, coffee is known as "Bac Xiu." In these regions, due to the hot climate, ice is added to the coffee, resulting in a milky brown-colored drink. The term "Bac" in the Southern accent means "faded," referring to the appearance of the drink.In Hai Phong province, a Northern port city with a distinct accent, coffee is known as "Mau Da" because of the various shades of brown, white, and black observed in a cup of Vietnamese Iced Coffee.