to operate the Kowloon–Canton Railway (KCR) system, with an initial period of 50 years. The KCRC would receive a one-time upfront payment of HK$4.25 billion, a fixed annual payment of HK$750 million and a variable annual payment based on revenues generated from operation of the KCR system. In addition, MTRCL would make a payment of $7.79 billion for the acquisition of property and other related commercial interests. The KCRC's lines were less profitable than those of the MTRC, and the KCRC was less active in property development. It was widely considered that the government's choice was to avoid being criticised for selling assets of the KCRC, which it wholly owned, to MTRCL for an unreasonably low price. Leasing the operation rights of the KCR system to the MTRCL avoided actually selling the KCRC. On 2 December 2007, the Chinese name of the MTRCL was changed to 香港鐵路有限公司 (literal translation: Hong Kong Railway Corporation Limited) after being granted the Service Concession while the English name will remain unchanged. The KCRC is now a holding company of the KCR system, without actual railway operations. The merger was approved by shareholders of the MTRCL on 9 October 2007. The merger is effective for 50 years. This also resulted in changing the system's Chinese name from "地鐵" ("Subway") to "港鐵" "(Hong Kong Railway"). All adult Octopus Card holders would be the first to benefit from the merger. Student and concessionary Octopus holders would also benefit from the merger by further reducing $0.1 from their 50% off fares. Student Octopus holders would continue to pay the current reduced concessionary fares on the MTR network. Elderly Octopus holders would be introduced to a new fare system which only the elderly can enjoy a $2 fare to anywhere on the MTR network (excluding Airport Express, Light Rail, and Cross-Boundary Stations). Revenue model In July 2021, Liber Research Community, an NGO, produced a report which detailed the history of MTR's revenue model. In it, it reported that the "Rail + Property" development model was originally formed to offset unexpected financial difficulties with creating the original MTR lines, with original estimates that MTR's property would account for approximately 20 per cent of its total revenue. The Executive Council also determined that since MTR had to apply for land grants from the government, it was the government's decision on how land above MTR stations should be allocated, stating "the grant