I' m writing to tell you about an activity to be held in the coming summer holiday. I know that you have great interest in ancient China. When I got the information that there will be a voyage called Discover The Maritime Silk Route, I immediately wanted to invite you to join it with me. The voyage will last for two weeks from June 17, and we will get on a big ship from Quanzhou, which is the beginning of the route. Finally, we will finish the voyage in Japan. During the voyage, we can communicate with each other. Besides, the organizer will show us some excellent performance about the history in that time.