寶安縣
During the Jin dynasty until the early Tang dynasty, Hong Kong was governed by Bao'an County. Under the Tang dynasty, the Guangdong region flourished as an international trading centre. The Tuen Mun region in what is now Hong Kong's New Territories served as a port, naval base, salt production centre and later as a base for the exploitation of pearls. Lantau Island was also a salt production centre, where riots by salt smugglers against the government broke out. From the middle of the Tang dynasty until the Ming dynasty, Hong Kong was governed by Dongguan County.