The Nanjing Lukou International Airport (NKG) is about 40 km away in the south-east of Nanjing. On the airport’s web site you find flight information as well as transportations into the city center:
subway connections from the airport:
subway S1 to Nanjing South Highspeed Railway Staition: Travel time 40 minutes
A Taxi stand is right in front of the Arrival Hall
If you prefer travelling by Highspeed train you will find necessary information online at www.12306.cn.
public transport in Vienna
The Jiulonghu Campus of Southeast University is at the South area of Nanjing City and can be reachable with the lines 1(Baijiahu station), line 3(DongDa Jiulonghu station) and S1(Jiyin DaDao station). Tickets are available at the subway stations and by Alipay.