Dear Maria，
I'm glad to hear that you are coming to study in China and will stay in my family. I want to extend my sincere welcome to you. Next I will introduce my family to you and some precautions.
First of all, there are me, my father and my mother in my family and a sister. My parents are very friendly, I believe they will be very friendly to you. My sister is very lively。I believe you will have a happy study abroad life. Secondly There are no special rules in our house, except that we must turn off the lights and go to bed before 11:00 at night. You have to get up before 7:30 in the morning. Also If you need help, Please turn to us for help at once. In addition，Our family goes to the museum and swimming pool every weekend.
Next, I'd like to introduce you to the arrangements for your study abroad. You will leave from London on April 2nd and I will wait for you at the airport. We have spoken to my school Sign up for you，You can go to school with us the day after you come to China. My friends are also very friendly. I'm sure they'll be very kind to you. My parents will pick us up from school and after school.
If you need anything or if you have any questions, Welcome to reply to me. Good luck.