speeding up exploration of building Hainan into a free trade port 开放热土：加快探索建设海南自由贸易港进程：speeding up exploration of building Hainan into a free trade port Practice and exploration of China's pilot free trade zone Practice and exploration of Beijing-Tianjin-Hebei pilot free trade zone Exploration and sail on China's free trade port 并列题名：Exploration and sail on China's free trade port 并列题名：Practice and exploration of Beijing-Tianjin-Hebei pilot free trade zone