a note for asking a friend to have a lecture

　　dear mr green,

　　there will be a lecture on a brief history of the emperor palace given by professor ram from the palace museum in the children's palace at 3:00 tomorrow afternoon. if you are interested in the lecture, pls get to the children's palace before 3 o'clock. the children's palace is not far from your hotel. you may walk there. it will take you only a few minutes. when you go out of the hotel, turn left and walk down the street until you come to a traffic light. take a right turn there, walk two crossings and you will see a post office on your right. the children's palace is next to it. see you tomorrow afternoon.

　　yours truly,

　　liwen.