At the Chinese Communist Party’s centennial celebration, President Xi Jinping called for defiance against foreign pressure. As China challenges the U.S.’s leadership – from AI to defense – WSJ’s Jonathan Cheng looks at what’s next for the country. Photo: Wang Zhao/AFP More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM #WSJ #China #China100Years