Structural reform of the supply front and institutional innovation of China pilot free trade zone Study on the institutional innovation of Zhejiang pilot free trade zone 并列题名：Study on the institutional innovation of Zhejiang pilot free trade zone and research on institutional innovation of Guangdong Free Trade Zone Research of financial opening up and innovations of the pilot free trade zones Regulatory reform of the trade system in China's pilot free trade zones 并列题名：Research of financial opening up and innovations of the pilot free trade zones