from hebei normal university of Science and Technology to beijing airport by long distance bus

Hi! Once I arrive at BJ International Airport where can I buy a long distance bus return ticket BJ/Qinhuangdao?

Plus, at 5 a.m. I have to go from HNUST (Hebei Normal University of Science and Technology- West Hebei St., No. 360, Qinhuangdao City) to BJ International Airport.
Could you tell me if the long distance bus leaving for BJ airport from Qinhuangdao's Long Distance Bus station (No. 405, Beihuan Lu of Haigang Street) will stop at HNUST (Hebei Normal University of Science and Technology- West Hebei St., No. 360, Qinhuangdao City) on the way? If not, how can I reach Qinhuangdao's Long distance Bus Station from HNUST at 5 a. m.? Is there any taxi or bus available?