Bus line: No.4 → No.21, the total distance is about 37.2 kilometers
1, take No.4 from Sunshine District, after 10 stops, arrive at the railway station
2, walk about 260 meters, arrive at the railway station
3, take No.21, after 7 stops, arrive at the station of the heat source factory
4, walk about 770 meters, arrive at the cbd