Peng Liyuan, left, in a 1989 photo with her husband, Xi Jinping, who became president of China in 2013. Peng, who was a celebrity singer even before Xi became president, has supported anti-smoking efforts in China for many years. She is thought to have influenced recent policies in China to restrict smoking and tobacco marketing. This photo was included in a book released this year, "Xi Jinping: The Governance of China." McClatchy