BEIJING, March 7 (Xinhua) -- China is firmly opposed to U.S. deployment of mid-range missile system in Asia, and the deployment is not welcomed by regional countries either, Chinese Foreign Minister Wang Yi said Friday."Years have passed since the United States released its 'Indo-Pacific Strategy,' but what has it done for regional countries? Nothing, except for stirring up troubles and creating disputes. It has proved to be more of a disruptive factor than a constructive contributor," Wang said at a press conference on the sidelines of the third session of the 14th National People's Congress.