China's tech giants spend big on digital 'red envelope war' to gain more mobile usersAustralian scientists make breakthrough in developing unhackable quantum internetChina steps up development of intelligent vehiclesEconomy on stable footing, experts sayChina renews blue alerts for severe convection weather, sandstormsU.S. stocks tick down as Apple drags tech sector lowerChina's railway system sees 159% surge in preChina's 5G phone shipments top 167 mln in 2020: reportChina's current account surplus remains in reasonable rangeClimate change risks for fish across world: UW researchers