The Wall Street Journal Tesla Is Losing Ground Against Its Biggest Rival in China — BYD makes advances in AI-powered driving software while Musk’s wait for approval grows. New York State Bans DeepSeek From Government Devices — State says app raises serious security and censorship concerns. China’s Xi Is Building Economic Fortress Against U.S. Pressure — As Trump turns up the heat on Beijing, China is trying to become more technologically self-sufficient, but its efforts have