During January to September 2011, toll revenue derived from major toll highways operated and invested by the Group recorded a slowdown in growth in general, while toll revenue derived from some projects decreased to a significant extent. On the other hand, before including the impact of changes in accounting estimates, cost of services for toll highways increased relatively much more year-on-year, which was mainly due to increases in employee expenses and road maintenance expenses, particularly due to the fact that the Group had carried out maintenance and improvement works on various highways in Shenzhen such as Meiguan Expressway (which had resulted in an increase in cost of services of approximately RMB132 million for the Reporting Period). However, based on the previous continuous research and investigation on the road maintenance plan, the Company adjusted and improved the road maintenance plan and its implementation scheme during the Reporting Period, thereby leading to corresponding adjustments of the accounting estimates on provisions for road maintenance/resurfacing obligations. This has resulted in an increase in net profit of RMB291 million during the Reporting Period and for the period of January to September 2011.