There is no bus to Ya 'an at Hehuachi Bus Station. You need to take a bus to Shiyangchang Bus Station or take a bus to Sichuan Agricultural School at Xinnanmen Chuannong Guest House.

Scheme 1: From Hehuachi Bus Station to Shiyangchang Bus Station, you need to take Bus No.28 at the North Railway Station and go straight to the terminal. All the way to 2 yuan. Shiyangchang Bus Station to Ya 'an Ximen Station, the fare is 45, I wonder if there is any price increase now. It may take about 50 yuan to take a taxi from Lotus Pond Bus Station to Shiyangchang.

Option 2: From Lotus Pond Bus Station to Xinnanmen Chuannong Guest House, you need to take bus No.55 at North Railway Station and get off at Xinnan Road. When you get off the bus, you should see the sign of Chuannong Guest House on the roof. After getting off, you can cross the road directly and see the school bus on Longjiang Road. The school bus 35 yuan is very comfortable. You can go directly to the gymnasium of Ya 'an old campus. It is recommended to take the school bus, which is cheap and affordable, but it is best to buy tickets in advance.

Finally, I wish you a happy stay in Chuannong ~ ~ ~