Jean Liu, president of Didi Chuxing, speaks during the WSJDLive Global Technology Conference in Laguna Beach, California, U.S., speaks during the WSJDLive Global Technology Conference in Laguna Beach, California, U.S., on Tuesday, Oct. 25, 2016. The conference brings together an unmatched group of top CEOs, founders, pioneers, investors and luminaries to explore tech opportunities emerging around the world. Photographer: Patrick T. Fallon/Bloomberg via Getty Images