Statement of intent for internship. What is it?



Was hoping one of you might have been faced to draft a statement of intent. I am applying for an internship in a Chinese company and whilst I was ready to prepare a standard covering letter, I received a series of questions to answer and issue a statement of intent.
Could anyone confirm the format of such thing? Is it a writing exercise different from our usual cover letter? Looking at the questions I was planning on including those elements in my letter anyway e.g. why do you want this internship? how would you contribute etc.
Please let me know if you have done one or are aware of the type of format expected i.e a letter (all in one) or separate answers.