Campus card or student ID card. According to the information of official website of Yunnan National Defense Vocational and Technical College, you need a campus card or a student ID card to enter the library. If you are not a student or faculty member of the school, you can't enter the library. Yunnan National Defense Vocational and Technical College is a full-time general public higher vocational and technical college approved by the Yunnan Provincial People's Government on July 1 2004, which was formed by the merger of Yunnan National Defense Industry School, Yunnan National Defense Technical School and Yunnan Ordnance Workers College, and trained advanced applied skilled personnel to meet the needs of manufacturing, electronic information and other industries.