PCCW Solutions, the information-technology services arm of Hong Kong telecommunications giant PCCW Group, has secured for an undisclosed amount a contract to build four digital theatre systems for the Dunhuang Academy, a mainland conservation agency. The project is under the state-backed Dunhuang Mogao Grottoes Conservation and Utilisation Programme, which seeks to preserve and educate the public about the caves in Gansu province, which house priceless Buddhist relics. The caves are on Unesco's World Heritage list.