Taxiway WC location requires a car. Access from the Airport Highway (National Highway 2) to Highway 110 East exit. The exact taxiway location is not signed so you have keep a sharp eye out for the turn from Buxin Street. Using a GPS will help tremendously.
There are convenience stores in the towns both to the northeast and southwest (zoom around Google Maps and look for 7-Eleven, Hilife, and OK Mart. The Hilife convenience store at the intersection Sanming Road, Section 2 and Kengguo Road has a public restroom.