Beijing metro enables "tap-and-go" fare payment for foreign MasterCard and Visa card holders

①Beijing metro enables "tap-and-go" fare payment for foreign MasterCard and Visa card holders ②A fresh brew in academia as China's coffee science undergrads program kicks off ③China builds world's highest BeiDou high-altitude meteorological observation station ④Discovery of major city ruins aids research into China's earliest dynasty ⑤A Thousand Whys: What happened to the first person who ate a crab?