| 					For  the year ended 31 December | 			|||||
| Results | 					 						2018					 											RMB'000					 				 | 									 						2017					 											RMB'000					 				 | 									 						2016					 											RMB'000					 				 | 									 						2015					 											RMB'000					 				 | 									 						2014					 											RMB'000					 				 | 			
| Operating revenue | 3,935,246 | 4,095,835 | 3,669,781 | 3,396,333 | 3,014,603 | 
| Total profit | 63,655 | 59,857 | 76,081 | 56,468 | 43,600 | 
| 					 						Net profit attributable to the 					 											Shareholders of parent company					 				 | 				45,433 | 44,760 | 56,458 | 41,773 | 33,567 | 
| 					 						Basic and diluted earnings per Share 					 											(expressed in RMB per share)					 				 | 				0.42 | 0.41 | 0.52 | 0.52 | 0.42 | 
							
					 								 				 									As at  31 December				 							 								Financial Position				 									2018 				
 RMB'000									2017 				
 RMB'000									2016 				
 RMB'000									2015 				
 RMB'000									2014 			
 RMB'000								 								Total assets				 									2,353,980				 									2,471,830				 									2,111,570				 									2,094,695				 									1,551,766				 							 								Total liabilities				 									1,877,242				 									2,008,423				 									1,668,801				 									1,686,785				 									1,309,194				 							 								Equity of Shareholders				 									476,737				 									463,407				 									442,769				 									407,911				 									242,572				 							 								Net assets per Share 				
 (as stated in RMB per Share)									4.41				 									4.29				 									4.10				 									3.78				 									3.03