Length180cm, width 90cm. According to the enrollment brochure of Duyun No.1 Middle School, the size of a single bed in a student dormitory is generally 180 cm long and 90 cm wide, and some beds are 900 mm wide and 1900 mm long, which are subject to the student standards. Duyun No.1 Middle School in Qiannan Buyi and Miao Autonomous Prefecture is a public welfare second-class institution organized by Qiannan People's Government. Its teaching and administrative staff are all national public officials, managed by Qiannan Education Bureau, and it is a public educational institution that implements high school education. Have the qualification of a legal person and bear civil liability independently.