Dear Sir or Madam,

I am writing to apply for the Summer Cultural Exchange Program in the United States. I have been learning English for six years and won the first prize in the municipal English speech contest last year. I believe this program will help me improve my communication skills and deepen my understanding of American culture.

I would be grateful if you could send me the detailed application form and requirements. Thank you for your time and consideration.

Yours sincerely,
Li Hua