Server maintenance. According to the query of official website of Guizhou University, gzhelper has a fixed system maintenance time every semester, and can't access the system during this time. Guizhou University, referred to as "Da Gui", is located in Guiyang City, Guizhou Province. It is a university jointly established by the Ministry of Education and the People's Government of Guizhou Province. It is a national "double-class" construction university, a "2 1 1 project" key construction university and a "one province, one school" key construction university.