RELATED PARTY TRANSACTIONS (Amounts Due to Related Parties) (Details) (CNY)
Dec. 31, 2013
Dec. 31, 2012
Related Party Transaction [Line Items]    
Amounts due to related parties 97,010,163 89,634,516
Expedia (refer to a1) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 25,908,342 40,713,108
Egencia Shanghai (refer to a2) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 769,636 710,919
Egencia Shanghai (refer to a2) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 532,450   
Egencia Cayman (refer to a2) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 18,290,700   
EAN (refer to a4) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 31,950,021 33,952,245
TripAdvisor China (refer to b2) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 335,337 201,337
Kuxun (refer to b3) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 288,905 631,545
Tencent (refer to c2) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 417,602 1,219,482
Tencent (refer to c3) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 329,349 340,625
Expedia (refer to d1) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 55,959 221,852
Jiuyou (refer to e) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties    5,602,708
2012 Affiliate Company (refer to f) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 311,025 311,025
2012 Second Affiliate Company (refer to g) [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 17,768,819 5,398,068
Others [Member]
   
Related Party Transaction [Line Items]    
Amounts due to related parties 52,018 311,602