HOW TO GET TO LANZHOU JIAOTONG UNIVERSITY

Kindly, can someone help me with the most convenient way of getting to Lanzhou Jiaotong University in Gansu Province from Lanzhou Railway Station?

1) What bus number can I take? How long does it take approximately and how much does it cost?
2) is there a metro line that I can take?
3) How much does a Taxi cost approximately?
I will be more than grateful for your help