What airport bus line shall I take at CAN, my hotel is Hong Yuan hotel in Sanyuanli?

You should take the shuttle bus line 1 and get off at HNA Central Hotel. And then walk about 650 yards, you will reach the hotel.

Or you can take the subway line 3 form the airport to Jiahe Wanggang Station, and then transfer to line 2 to Sanyuanli station. Take the Exit A1 and walk about 550 yards, you will get to the hotel.