The literal translation of the title of this movie is: The returning letter from heaven.
This movie was originally intended as a children's movie, and it is made by the national children's movie studio of China. However, the classification of this movie to the family category was much accurate and much better than the original children's movie because it had achieved something that is rare in China:
Most Chinese children's movies cannot be classified into the family category because Chinese parents often dislike what is popular among kids, such as fashion and movie. A kids' favorite movie may not be disliked by parents, but for most of the time, certainly not very much like either. This movie is a rare piece of excellence in that both the Chinese parents and kids like it and the category of family is well deserved.