As a major international financial centre, Hong Kong has a prudent and robust financial regulatory regime. Over the past four decades, Hong Kong's economy has been closely connected to the Mainland's development. As the Mainland becomes the world's second-largest economy, Hong Kong has given full play to its considerable advantages by contributing to national development. Hong Kong has served as a two-way gateway connecting the Mainland and international markets. Currently, more than 1 100 Mainland enterprises are listed in Hong Kong with a combined market value of over US$2 trillion, or over 60 per cent of the total market capitalisation in Hong Kong.