my train will reach guangyuan at 1 am and it will be middle of the night i want to catch a bus.

The Phoenix Hotel at no. 53, North Street, Lizhou District is highly recommended. It is near the railway station, and you may taxi there for about CNY 10. The city is very safe. Don't worry! On the next day, you can catch a bus to Jiuzhaigou for CNY91. The buses depart at 10:20 (every day) and 6:00 (every two days).