Chinese shares edges higher on Tuesday while the country’s central bank guided the yuan to its highest fix in almost a month as Beijing sought to keep markets calm heading into the Lunar New Year holidays. The gains recovered only part of Monday’s losses, incurred after official surveys of China’s manufacturing and services sectors disappointed and sent ripples of selling through markets globally. “The data suggest continued uncertainties and headwinds to the outlook,” wrote Shengzu Wang, an analyst at Barclays.