Beijing West Railway Station: Get off at Beijing West Railway Station, take 320 at North Square East, get off at Zhongguancun, and transfer to 307 at HKUST North Gate.
Beijing Railway Station: After getting off at Beijing Railway Station, take Metro Line 2 and get off at Jishuitan Bridge, then transfer to 690 and get off at the North Gate of HKUST.
Beijing South Railway Station: After getting off at South Railway Station, take Metro Line 4 and get off at Ping 'anli Station, walk to Huguo Temple, and take Bus No.690 and get off at the north gate of University of Science and Technology Beijing.
Beijing North Railway Station: Walk 140m, get on at Xizhimen A, take subway 13 line (after 3 stops | 6km), get off at Wudaokou B exit, walk 20m, get on at Wudaokou Station of Metro, and get off at the north gate of University of Science and Technology Beijing No.86.
Capital Airport:
Capital Airport 1 Terminal Station: Walk 820m, get on at the entrance of Terminal 2, take the airport express (1 station | 8.5km later), get off at Sanyuan Bridge, walk 120m, get on at Sanyuan Bridge, take the subway 10 line, get off at Peony Garden exit, and walk.
Terminal 2 of Capital Airport: get on the bus at the entrance of Terminal 2, take the Airport Express (1 station | 20.4km), get off at Sanyuan Bridge and walk 120m, get on at Sanyuan Bridge and take the subway 10 line (after 7 stops | 8.5km, get off at Peony Garden and walk/kloc-).
Terminal 3 Station of Capital Airport: Walk 860m and get on at the gate of Terminal 3, take the Airport Express (| 27.5km after 2 stops), get off at Sanyuan Bridge and walk 120m, get on the subway 10 line at Sanyuan Bridge (| 8.5km after 7 stops), get off at the Peony Garden exit and walk at Peony Garden/kloc-0.
Nanyuan Airport: Walk 20 meters to get on the bus at Nanyuan Airport Station, take the airport special line (after 2 stops | 16.2km), get off at Xidan, walk 160m to get on at Xidan H, walk 160m to get on at Xidan H, and take Metro Line 4 (after 3 stops | 2.9km) to get off at Xidan.
Take the 690 (after 9 stops |7.4 kilometers), get off at the North Gate of University of Science and Technology Beijing and walk for 20 meters.
Zhaogongkou Bus Station: Walk 780m, get on at exit D of Liujiayao, take Metro Line 5 (after 13 Station | 13.5km, get off at the south exit of Huixin West Street, get on at the south exit of Huixin West Street, and take Metro 10 Line (after 4 stops | 4.10).
Liuliqiao Long-distance Station: Walk 500 meters to get on the bus at the south of Liuliqiao, take 6 17 (after 19 Station |16.8km), and get off at the north gate of University of Science and Technology Beijing, and walk 40 meters.
The above is the bus route to Beijing University of Science and Technology. If you don't know, please contact your company.