The Zhuhai area has been inhabited for thousands of years. Until the 1970s, Zhuhai was a group of fishing villages with a population of 100,000 or so. Since 1980, when it was designated a Special Economic Zone (SEZ) by the central government, it has expanded to include nearby areas and is now a modern city with well over a million inhabitants. http://wikitravel.org/en/Zhuhai