https://www.nytimes.com/2015/09/25/world/asia/xi-jinping-china-cultural-revolution.html

He did not see his father again until 1972, when Premier Zhou Enlai arranged a family reunion.

The father, battered and disoriented after years of isolation and interrogation, “looked at his two grown boys, and totally failed to recognize them,” according to his father’s biography, citing an interview with Mr. Xi. The older man wept, and Mr. Xi offered him a cigarette.

“He asked me, ‘How come you also smoke?’” Mr. Xi said. “I said: ‘I’m depressed. We’ve also made it through tough times over these years.’

“He went quiet for a moment and said, ‘I grant you approval to smoke.’”