Take bus 14, 22 and 23, and get off at Huacheng Company Station (the former site of Jiangsu-Anhui Border Government). Dongxi Street is not far north. Go west along West Street until you reach the first crossing (you will see Little Lotte Mart), turn left and walk south for more than 200 meters.
Or get off at Huancheng Road Station, go west first, and walk 200 meters north at the first crossing (there is a small pavilion).
I suggest taking West Street. You can go shopping without feeling tired. Hehe-