Ask for a resignation letter written in classical Chinese

Since I arrived in Xiangtan, I have been grateful for the care and training of General Manager Luo, General Manager Chen and General Manager Hai. But after repeated thinking recently, I finally resigned and realized my wish. I hope I support Shangyu, but my friendship will never change. From the bottom of my heart, don't forget your great kindness, but when you are in a hurry to kowtow to XXX, please give me some advice.

Haisir's inculcation is unforgettable. However, I can't forget my great achievements and ideals. Your atmosphere enlightened me. Don't be moved by it. I hope Mr. Wang Can can understand. I should work hard to repay you, sir.