The Guangdong-Hong Kong-Macao Greater Bay Area (GBA), comprising the Hong Kong and Macao special administrative regions and nine cities in southern China's Guangdong Province, is one of the largest and most populated urban areas in the world.

Venezuelan vlogger Rafael Saavedra spent a day traveling by high-speed rail, visiting five cities in the GBA: Shenzhen, Huizhou, Dongguan, Guangzhou and Foshan. During his trip, he was particularly impressed by the bright and beautiful high-speed railway stations, high-rise buildings and fascinating historical monuments. Rafael noted that the rapid development of the GBA is closely linked to the hard work of its people.