Which bus should I take for building 3b Jiubao of Hangzhou Baifu Times Center?

Bus route: Metro Line 65438 +0 → b4, the whole journey is about 7.8km.

1. Take the subway 1 line from Jiubao, pass four stops and arrive at the East Railway Station.

2. Walk about 10 meter to the East Railway Station and the West Railway Station.

3. Take b4 Road, pass 1 station and arrive at Jia Fan Road (brt) Station of Tiancheng Road.

4. Walk about 640 meters and arrive at Building 3 of Baifu Times Center.