Take bus no.83, you don't need to change. Take bus No.83 from Kunming Station to Xiaochaiyuan Overpass, then take bus No.83 to the Overpass, which is the Education Department, or get off at Lotus Hotel Station and walk back to the Overpass, which is the Education Department. If you don't know the direction when you get off, ask passers-by to avoid going wrong ~