Dongguan is not a city, it is more like a lot of cities that have grown together. The area is near to Hongkong, Shenzhen and Hongkong, so 3 airports around. Most famous for nightlife parties is Changping Town (常平镇). This area very often will be called "the chinese las vegas", but not because of the gambling (this you will not find here), but because of the great range of girls entertainment. If you like chinese sexy girls, you should try to find a chance to spend some days in Dongguan.