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LAND USE RIGHTS (Details) | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2013 CNY | Dec. 31, 2012 CNY | Dec. 31, 2011 CNY | Dec. 31, 2013 USD ($) | Dec. 31, 2013 Land use rights CNY item | Dec. 31, 2012 Land use rights CNY | Dec. 31, 2011 Land use rights CNY | Dec. 31, 2013 Land use rights Shanghai CNY sqm | Dec. 31, 2013 Land use rights Nantong CNY sqm | Dec. 31, 2013 Land use rights Chengdu CNY sqm
Land use rights |  |  |  |  |  |  |  |  |  |
Number of land use rights |  |  |  |  | 3 |  |  |  |  |
Cost |  |  |  |  |  |  |  | 68,269,734 | 48,912,729 | 9,747,800
Square meters |  |  |  |  |  |  |  | 17,000 | 19,500 | 9,000
Use right years |  |  |  |  |  |  |  | 50 years | 40 years | 50 years
Amortization expense of land use right | 7,363,364 | 7,736,767 | 8,445,950 |  | 3,182,490 | 2,801,615 | 2,620,706 |  |  |
Net book value | 107,476,794 | 110,659,284 |  | $ 17,753,902 |  |  |  |  |  |

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- Definition Represents prepayments for usage of the land where the office buildings are located. Value is reported at cost, net of amortization of the related lease period. + References No definition available. + Details
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- Definition The number of land use rights acquired by the entity. + References No definition available. + Details
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- Definition Area of a real estate property. + References No definition available. + Details
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