Dear Angela,
Hello,Angela,we've smoothly and safely returned home,we want to appreciate your warmly and patiently guiding us to travel around Beijing for the world famous sight spots,including the Great Wall,The Imperial Palace and so on.Without doubt,the scenery in Beijing is so splendid that our eyes are kept fully occupied.This time,we've really had a good time here.By the way,we wish to have the chance to do the same for you in my country.Therefore,if it is convenient for you,please pay a visit to my home,we will show our welcome to you.
Yours
Smith.
自己写滴,供楼主参考.