Take bus No.310 from the main entrance of Nanyou and get off at Jiuxiang Hexi Station. It's a bit far to Qixia Mountain. Here are two routes for your reference:

1, walk to Nanjing University of Posts and Telecommunications Station, outer ring road 177, get off at South University of Technology West Station, walk to Zijin College Station (walk 80 meters along Fairyland Road, turn left into Wen Lan Road, walk 1 10 meters, arrive), take the East Line, get off at Qixia Mountain Station and walk to Qixia.

2. Walk to the Institute of Posts and Telecommunications (Xianlin) Station, take bus No.310, get off at Zijin College Station, walk140m to Zijin College Station, take the East Line, get off at Qixia Mountain Station, and walk to Qixia Mountain (get off and walk back for 260m).