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Long-term investment (Details Textual)
 1 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Dec. 31, 2013
USD ($)
Dec. 31, 2013
CNY
Dec. 31, 2012
CNY
Dec. 31, 2013
USD ($)
Dec. 31, 2013
CNY
Dec. 31, 2012
CNY
Jun. 28, 2013
Jun. 30, 2013
Avalon [Member]
USD ($)
Jun. 30, 2013
Avalon [Member]
CNY
Dec. 31, 2013
Avalon [Member]
USD ($)
Dec. 31, 2013
Avalon [Member]
USD ($)
Dec. 31, 2013
Avalon's [Member]
USD ($)
Dec. 31, 2012
Avalon's [Member]
CNY
Dec. 31, 2013
Avalon's [Member]
USD ($)
Dec. 31, 2013
Avalon's [Member]
CNY
Long Term Investments [Line Items]                                
Stock Issued During Period, Shares, Restricted Stock Award, Gross                 2,800,000 2,800,000            
Stock Issued During Period Restricted Stock Award Par Value                 $ 0.089              
Stock Issued During Period, Value, Restricted Stock Award, Gross                 $ 250,000 1,500,000            
Percentage To Acquire Of Restricted Stock 50.00%                              
Equity Method Investment, Ownership Percentage   24.98% 24.98%   24.98% 24.98%   32.22%                
Cost Of Revenue   4,867,425 29,741,914 31,960,827 5,885,625 35,963,524 38,569,594       40,000 80,000        
Net Income (Loss) Attributable To Parent   $ 951,603 5,814,671 5,288,361 $ 959,203 5,861,115 2,944,195       $ 200,000 $ 400,000 $ 58,992 360,466 $ 120,300 735,080