It's Saturday morning. Mary goes out. She is on her way to the park. She is going there to watch a flower show. But she doesn't know how to get there. She asks the GPS on the mobile phone. It says, "Please go down Nanjing Road and then turn right at the second crossing. Go along the street for 500 meters. Then you will see a supermarket. Turn left, and go straight. You will see the park on your right. The park is between a bank and a hotel. And the hotel is in front of the park. "