FAIR VALUE MEASUREMENTS (Details)
12 Months Ended
Dec. 31, 2013
USD ($)
Dec. 31, 2013
CNY
Dec. 31, 2012
CNY
Dec. 31, 2011
CNY
Dec. 31, 2013
Recurring [Member]
CNY
Dec. 31, 2012
Recurring [Member]
CNY
Dec. 31, 2013
Non Recurring [Member]
CNY
Dec. 31, 2012
Non Recurring [Member]
CNY
Dec. 31, 2013
Level 1 [Member]
CNY
Dec. 31, 2012
Level 1 [Member]
CNY
Dec. 31, 2013
Level 2 [Member]
CNY
Dec. 31, 2012
Level 2 [Member]
CNY
Dec. 31, 2013
Level 2 [Member]
Recurring [Member]
CNY
Dec. 31, 2012
Level 2 [Member]
Recurring [Member]
CNY
Dec. 31, 2013
Level 3 [Member]
CNY
Dec. 31, 2012
Level 3 [Member]
CNY
Dec. 31, 2012
Level 3 [Member]
Recurring [Member]
CNY
Dec. 31, 2013
Level 3 [Member]
Non Recurring [Member]
CNY
Dec. 31, 2012
Level 3 [Member]
Non Recurring [Member]
CNY
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                                      
Cash equivalents (time deposits)         124,500,000 311,037,062             124,500,000 311,037,062          
Cash equivalents (money market funds in the PRC)         45,579,149               45,579,149            
Restricted cash (time deposits)         103,440,000 61,400,000             103,440,000 61,400,000          
Short-term investments (time deposits)         1,485,800,264 1,581,502,010             1,485,800,264 1,581,502,010          
Other current assets (interest fee employee loan)         3,267,078 2,281,675             3,267,078 2,281,675          
Other non-current assets (interest free employee loan)         9,376,665 7,689,911             9,376,665 7,689,991          
Accrued expenses and other current liabilities (contingent purchase consideration           6,900,334                     6,900,334    
Investment in non-consolidated affiliates                                        
Intangible assets             47,791 239,233                   47,791 239,233
Total assets measured at fair value   47,791 239,233                           47,791 239,233      
Investment in non-consolidated affiliates, Impairment charges       (4,812,242)                                 
Intangible assets, Impairment charges (316,666) (1,917,000) (2,237,567) (152,412)                              
Total assets measured at fair value, Impairment charges   (1,917,000) (7,049,809)