Dear friend XXX,
This is XXX writing to you onboard the plane to the United States.
US is 7500 sea miles from China, but it only takes about 16 hours of flight. I am very excited at this moment because I'm on the way to America.
We will go to quite a few American cities like New York, Chicago, LA and so on. I have always been looking forward to visiting them.
I still remember the time when you visited our school--we played basketball, went skating, and sang together. Although you stayed only for a few days with us, we became very good friends. All the teachers and students miss you guys very much.
Our school will organize teachers and students to pay a visit to your school during Sept. 30th to Oct. 10th.
Hope our friendship will last for ever.
Yours,
XXX