Sina.com (April 13) disclosed that a certain army brigade organised 'live ammunition fire drills' in the middle of spring in the plateau and alpine mountains to test the shooting efficiency of a certain type of rocket launcher. It said the brigade achieved good results in all hits at an extreme distance and achieved new breakthroughs in actual combat capabilities. The brigade officers and soldiers told reporters that the training site is more than 5,000 meters above sea level, with high cold and lack of oxygen, and the environment is harsh.