| (ab) | Segmental reporting |
An operating segment is a component of an entity that engages in business activities from which revenues are earned and expenses are incurred, and is identified on the basis of the internal financial reports that are regularly reviewed by the chief operating decision maker in order to allocate resource and assess performance of the segment. For the periods presented, management has determined that the Group has one operating segment as the Group is only engaged in the integrated telecommunications business. The Group’s assets located outside mainland China and operating revenues derived from activities outside mainland China are less than 10% of the Group’s assets and operating revenues, respectively. No geographical area information has been presented as such amount is immaterial. No single external customer accounts for 10% or more of the Group’s operating revenues.