Dear ,

　　I am writing to inform you about the decision to resign from my current position. There are a few factors involved.

　　First and foremost, . Secondly, . Last but not last, .

　　I would like to take this opportunity to express my gratitude for the rewarding experience that I have enjoyed during my employment.

　　I sincerely wish you could approve of my resignation, and I apologize in advance for any inconvenience thus caused.

　　Sincerely yours,

　　Li Ming