A worker counts Chinese currency Renminbi (RMB) at a bank in Linyi, east China's Shandong Province, Aug. 11, 2015. (Xinhua/Zhang Chunlei)

　　by Xinhua Writers Wu Xia, Xu Ke

　　BEIJING, Sept. 20 (Xinhua) -- Economy and trade are perhaps the area where China and the United States have most of their converging interests and where they have achieved substantial and mutually beneficial gains through cooperation and management of differences.

　　It is worth mentioning that, with the rise of China's middle class and market entry made easier by such means as e-commerce and such mechanisms as a bilateral investment treaty (BIT) in the future, the China-U.S. trade structure is becoming more balanced and sustainable.

　　There are high hopes that Chinese President Xi Jinping's upcoming state visit to the United States slated for Sept. 22-25 will lead to a breakthrough in the BIT negotiations.