这定位是什么？书信？邀请函？便条？落款人是谁，学生？朋友？

Mr. Arron
Professor at British University
University Campus
Bristol, England
Subject: Invitation to the International Innovation Contest
Dear Sir:
Hello! Professor Arron, I take this letter to warmly send my greetings to you and your family. I hope your artistic endeavors at the Faculty are going well. If you wish to attend the International Innovation Contest, which will take place starting November 16 at our university and will last for four days, there will be six university groups as competitors in the application of robots in the specific technology area of rescue. I have the honor, on behalf of my university, to invite you and your assistants to join this exquisite scientific challenge.
Sincerely!
Li-Ming
Secretary of XXX University

any question

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