Hong Kong is a Special Administrative Region of the People's Republic of China. It is located on the southeastern coast of China. As a former British colony, Hong Kong has one of the world's most free economies and is a major international centre of finance and trade. Though administered by the PRC under the policy of "one country, two systems," Hong Kong is legally entitled to a high degree of legal and cultural autonomy, retaining its own legal system, currency, and immigration laws. Hong Kong even maintains its own rules of the road, with traffic continuing to drive on the left. Only national defence and diplomatic relations are responsibilities of the government in Beijing.