Swire Properties annual Santathon at Cityplaza in Quarry Bay. Two hundred pairs of parents and children will have a chance to explore the history and biodiversity of the area and be challenged with eight fun mini-games on their smartphones. Swire Properti

Swire Properties annual Santathon at Cityplaza in Quarry Bay. Two hundred pairs of parents and children will have a chance to explore the history and biodiversity of the area and be challenged with eight fun mini-games on their smartphones. Swire Properties, has been working with the Opeation Santa Claus charity project, holds its annual Santathon Challenge on the last day of White Christmas Street Fair. 03DEC16 SCMP/Xiaomei Chen (Photo by Chen Xiaomei/South China Morning Post via Getty Images)