BEIJING, June 9 (Xinhua) -- China's foreign trade maintained steady growth momentum in May, underscoring the resilience of the wider economy and its deepening integration with global markets. The total value of goods imports and exports in yuan-denominated terms grew 16.9 percent year on year to reach 4.45 trillion yuan (about 653 billion U.S. dollars) last month, remaining above 4 trillion yuan for th