When chief of global media giant Viacom Sumner Redstone gave a speech in Tsinghua University on his autobiography A Passion to Win, he was asked what made him to restart his career at the age of 60, the 81-year-old media tycoon said: “Firstly, there’s a self-driving force in my deep heart, which keeps my passion to succeed and surpass others; secondly, I don’t think I’m too old to leave work, actually I love my work very much.”