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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

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