How have you been recently? I miss you very much. I am writing to tell you about my recent situation.
Get out.
Yours,
Xiao Wei
A possible version:
Dear Mom and Dad:
How have you been recently? I miss you very much. I am writing to tell you about my recent situation while you are away.
During your absence, I felt quite lonely, especially watching other children playing happily with their parents. I really envy them! One day, I was late for school and was misunderstood by my teachers and classmates because I didn't have enough time to cook.
However, to my delight, my teachers and classmates always encourage me and give me a lot of help in my study and life.
More importantly, on the Mid-Autumn Festival, the local government held a special party for us. I am very happy and moved.
I miss you, mom and dad. But I can take care of myself. I look forward to meeting you.
Yours,
Xiao Wei