The mother-child relationship between the School of Astronomy of Hohai University and Hohai University. Hohai University Astronomy College is an independent undergraduate college at present. Of course, its alma mater is Hohai University. As an independent college, the teaching system is of course independent and cannot be mixed with Hohai University. Wentian College of Hohai University is a full-time independent college jointly organized by Hohai University, Jiangsu Daye Investment Co., Ltd. and Wuxi Daye Housing Construction and Development Co., Ltd. with the approval of the Ministry of Education. It is also the only independent college established in Anhui Province by a national key university directly under the Ministry of Education.