Photo taken on Oct 17, 2015 shows the aerial view of the complex of Beihai Garden Expo in Beihai city,Southwest China's Guangxi Zhuang autonomous region, Oct 19, 2015. Beihai city, starting point of China's ancient marine silk road towards outside world, plays an important role in China's foreign trade over 2,000 years ago. To revitalize economic prosperity, Beihai is playing catch-up by joining the movement behind the Silk Road Economic Belt and the 21st-Century Maritime Silk Road to make its port an export channel for west China and a star of the modern version of the maritime Silk Road.[Photo/Xinhua]