Dear pf. Smith,
This letter is written by Li Hua, the president of the student union of Xinhua Mid-school. Our school is wants to coorporate with Chuanxi School for exchange, as a result we want to let the students undersdand more about the life of students in Chuanxi. We heard the news that your daughter has been volunteered in Chuanxi to teach the students English. On behalf of our school, I expect that your dear daughter could take one day to come and give us a speeck about there.
Hereby certify!
Sincerely yours
Li Hua