With the appointment of Lip-Bu Tan as Intel's new CEO, four major U.S. semiconductor giants - Intel, NVIDIA, AMD and Broadcom - are now led by CEOs of Chinese descent. To better understand the brains behind the chips, CGTN host Tian Wei has spoken with the author of "The Thinking Machine," Stephen Witt, who writes about the rise of Nvidia and its visionary founder and CEO, Jensen Huang. Witt talks about the story of Huang's transformation, along with Nvidia's rise, into one of Silicon Valley's most influential leaders.