There are many issue mentioned in the book that have not been addressed in the film...like:
1. When 小q was being a PR to demonstrate in school, his first year parents have been keep watching him secretly for a few years, 小q also aware of them and recognise them, but owing to his duty at that time, 小q cannot go to them...
2. There was a Golden retriever in the family to accompany 小q when he retired ...