Which bus should I take from Jinan Zoo to Jiurushan Waterfall?

Bus route: k50 → 3 12, the whole journey is about 57.2km.

1. Walk about180m from Jinan Zoo and arrive at the Zoo Station.

2. Take k50 Road, pass 22 stops, and arrive at Yanshan overpass North Station.

3. Walk about 60 meters to Yanshan overpass North Station.

4. Take bus No.3 12, pass 5 1 station and arrive at Jiurushan Station.

5. Walk about 90 meters and reach Jiurushan Waterfall Group.