 U.S.-listed shares of Chinese tech firms DiDi Global, Full Truck Alliance YMM, -3.09 and Kanzhun BZ, -2.40 rocketed in premarket trade after The Wall Street Journal reported that Chinese regulators will let them add new users again as early as this week. DiDi Global DIDI, -3.14 jumped 50, Full Truck Alliance rose 29 and Kanzhun rose 20. 