They are all very sad. The first one is about His Royal Highness giving away the country for the sake of the people; the second one is about the heroine secretly falling in love with the male protagonist, and in the end she becomes better for the male protagonist, but unfortunately they cannot be together in the end; the third one is about the story between anti-narcotics policeman Cheng Li and reporter Shen Xun; the remaining books are very sad [crying] [crying]