which xian bus station is better to take a bus/long distance bus for Tianshui?. hours?

The Provincial Bus Station is a better choice on account of more departures every day. The station is located at No. 354, Jiefang Road, Beilin District. It is adjacent to the main railway station, so you can easily find it. The buses are available from 7:00 to 18:00 at an hourly interval. The trip takes about 5 hours. The fare is CNY 220 per person.