唐总首先感谢部门对我的栽培还有唐总和杨总对我的照顾让我在很多方面的到了锻炼提升了自己在测试方向的广度和深度也更加让我认识到自己的不足。我这边考虑过了也和董鑫那边沟通了一些我还是想去那边试试看看在新的小组能不能有个突破帮我润色一下

Dear Mr. Tang,

First of all, I would like to express my gratitude to the department for nurturing me and to you and Mr. Yang for taking care of me. You have provided me with many opportunities to improve myself in various aspects, and have helped me to broaden and deepen my knowledge in the field of testing. You have also made me aware of my shortcomings.

After careful consideration and communication with Mr. Dongxin, I have decided to try my luck in his team. I hope to make a breakthrough in the new group and see if I can further improve myself.

Thank you again for your guidance and support.

Sincerely,

[Your Name]