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Statutory reserve (Details Narrative) - CNY (¥)
¥ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Disclosure of reserves within equity [line items]    
Statutory reserves ¥ 7,751 ¥ 7,751
PRC [Member]    
Disclosure of reserves within equity [line items]    
Profits after taxation, percentage 10.00%  
Statutory reserves ¥ 7,800 ¥ 7,800
Variable interest entity 50.00%