New Trick! Start all over again!

I always limit Hong Zheng for some bedtime story books. If i do not do so, he can ask me to read for a few hours non-stop. So, always he appeals me one last book. His one last book is never ending. So, one day, i told him that was really the last book and he nodded as a sign of agreement. So, i started to read page by page, when half way through, he asked me to go back to first page and start all over again. It was wierd but i sort of agree and start all over again. Again half way he asked to start all over again! Ha! this is his trick to keep the forever last book!! See, how smart he is!