Is there a bus from Shenyang Huyue Express bus station to Changchun?

Yes, you can take a direct bus to Changchun from Huyue Express Bus Station. The buses are available from 6:00 to 18:00 at hourly intervals, and the trip takes about 4 hours. The fare is about CNY 66.5 per person.

Or, you can take a bullet train to Changchun from the nearby North Railway Station. The trip takes about 1.5 hours. You need to pay CNY 91.5 to 142.5 for a second class; CNY 146.5 to 227.5 for a first class. :)