Have you ever been hurried to look for a public convenience in your trip? Many tourists to Shanghai complained that it is hard to find a public bathroom in the street of Shanghai. Indeed Shanghai is a city where an inch of land values an inch of gold, so the public bathrooms are far from enough. Then where to find one in emergency? Actually the places such as shopping malls, fast food restaurants, and hospitals are all ideal spots for free bathrooms. And the situations in other cities are the same.