Yes.
Relevant staff will check.
A letter of intention means: a written certificate indicating one’s intention. From Chapter 17 of "The Spread of Western Learning to the East" by Qing Ronghong: Before going abroad, the student's father and brother must sign the application form. Zhao Shuli's "The Changes of Lijiazhuang" 7: After saying that, he took out a copy of the articles of association and membership application form of the Sacrifice League and explained them to him.