NOTES TO THE CONSOLIDATED FINANCIAL  STATEMENTS  (RMB AND US$ AMOUNTS EXPRESSED IN THOUSANDS, EXCEPT PER SHARE DATA)  6.  Investment in joint ventures (cont’d) Note: (i)  The movement in impairment loss is as follows: China Yuchai International Limited | Annual Report 2013 81 31.12.2012 31.12.2013 31.12.2013 Rmb’000 Rmb’000 US$’000 January 1 4,205 4,386 717 Charge for the year —  32,303 5,278 Translation differences 181 (270) (44) December 31 4,386 36,419 5,951 31.12.2013 Y & C Yuchai  Remanufacturing Copthorne  Qingdao Total Total Rmb’000 Rmb’000 Rmb’000 Rmb’000 US$’000 Revenue 447,124 36,975 67,707 551,806 90,163 Interest income 645 200 139 984 161 Depreciation and amortization (23,813) (8,143) (12,341) (44,297) (7,238) Interest expense (15,626) (6,301) (7,473) (29,400) (4,804) Loss for the year, representing  total comprehensive loss (35,829) (49,890) (8,829) (94,548) (15,449) Proportion of the Group’s  ownership 45% 51% 60% Group’s share of loss (16,123) (25,444) (5,297) Impairment loss —  (10,371) (21,932) Fair value adjustment arising  from purchase price  allocation —  —  (2,804) Group’s share of loss of  significant joint ventures (16,123) (35,815) (30,033) (81,971) (13,393) Group’s share of profit of other joint ventures,  representing the  Group’s share of total  comprehensive income of other joint ventures 2,726 445 Group’s share of loss for  the year, representing  the Group’s share of total  comprehensive income for the year (79,245) (12,948)