Core Viewpoint - The article discusses the limitations faced by users attempting to transfer their mobile numbers, specifically the "777777" number, under China's mobile number portability policy, with China Telecom confirming that there are restrictions in place that require approval from leadership [1] Group 1 - Users with the "777777" number have encountered various restrictions when trying to transfer their numbers [1] - China Telecom representatives indicated that the transfer of three consecutive numbers is subject to city-level approval, while six consecutive numbers require provincial-level approval [1] - The ability to transfer numbers is ultimately dependent on leadership approval within the company [1]