China's goods trade continued to grow in the first five months of the year. The General Administration of Customs says foreign trade totaled nearly 18 trillion yuan, or around $2.5 trillion, from January to May – a 2.5-percent year-on-year increase despite an uncertain global environment. Wang Yaojing, associate professor of economics at Peking University, says diverse markets and structural upgrades are key to the resilient competitiveness of China's foreign trade.