Overview: HING joins the “Elderly Walk for Millions” and his picture hits the headlines. HING is very proud of himself but his family members tease him. HING is enraged and decides to achieve something great in his life. TING is touched by his enthusiasm and suggests him to write a book on KO family’s medical expertise. HING requests everybody to write the preface of his book. They try very hard to finish the preface but the content is missing…