Dear Mr. Wang,
I am writing to inform you of my intention of withdrawing from my current position in this magazine.
Though having worked here for merely two months, I, unfortunately, find that this job is quite different from my expectation. First of all, I have to say that my salary is far from satisfying, which barely sustains me in this expensive city. Moreover, so far I have never had the responsibility of any challenging task.
I apologize in advance for any inconvenience it might bring to you.
Yours truly,
Li Ming