European shares closed a touch higher on Tuesday as China relaxing its COVID-19 curbs more raised hopes of a recovery in the world's second-largest economy. The pan-European STOXX 600 index gained 0.1%, kicking off a holiday-shortened week in the black. China on Monday said it would drop its quarantine requirements for inbound visitors, further easing three-year border controls aimed at curbing COVID. While London and Dublin markets remained closed for the Christmas holiday, most European bourses advanced. Chinese reopening and the in-line U.S. inflation data on Friday could provide a "minor boost to equity markets," said Ipek Ozkardeskaya, senior analyst...