At some point every foreigner must face the Chinese toilet. Try as you might, you’ll one day find yourself hearing nature’s call with no ritzy Western restaurant in sight. And then it’ll happen again, and again, and then again. But never fear! Those public restrooms you’ve seen lingering around the city are always content to take in a pedestrian with an imminent need. You’ve likely heard a thing or two about what lies behind those doors, or depending on where you are, plastic flaps. Maybe you’ve