Guangzhou is one of China’s fastest growing cities, its population more than tripling from 5 million in 1980 to 18.6 million in 2020. The city has seen a huge influx of migrants in recent years, spurred by its fast-growing economy and high labor demands. Guangzhou is at the heart of the Guangdong–Hong Kong–Macau Greater Bay Area, the most-populous built-up metropolitan area in the world with approximately 65.5 million residents.