Kai-Fu Lee, chairman and chief executive officer of Sinovation Ventures, speaks during the HICOOL Global Entrepreneur Summit on September 11, 2021 in Beijing, China.BEIJING — Chinese artificial intelligence models may be at least half a year behind those developed in the U.S., but Chinese AI apps will likely take off much faster, said Kai-Fu Lee, former head of Google China.He was referring to large language models, which are trained on massive amounts of data that can process and produce text, images and v ...