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CONSOLIDATED STATEMENTS OF CASH FLOWS
 12 Months Ended
Dec. 31, 2011
USD ($)
Dec. 31, 2011
CNY
Dec. 31, 2010
CNY
Dec. 31, 2009
CNY
Cash flows from operating activities:        
Net income $ 144,011,799 906,395,868 807,625,038 859,019,253
Adjustments for:        
Deferred taxes 13,335,514 83,932,389 (31,980,857) 12,130,935
Share-based compensation expense 4,660,892 29,335,181 33,289,216 30,575,390
Depreciation of property and equipment 9,672,486 60,877,662 54,444,577 52,965,806
Amortization of intangible assets and other assets 3,115,358 19,607,751 31,657,738 15,703,041
Loss from disposal of property and equipment 323,276 2,034,664 4,213,443 204,061
Impairment of intangible assets     46,557,669  
Provision for (recovery of) doubtful debts (298,369) (1,877,904) (1,031,746) 162,318
Net realized gain on investment held-for-trading       (320,777)
Gain on deconsolidation of a subsidiary (793,331) (4,993,146) (68,774,051)  
Share of loss of an equity investee 1,305,709 8,218,001 648,106  
Changes in assets and liabilities:        
Increase in accounts receivable (320,050) (2,014,362) (7,144,958) (961,407)
(Increase) decrease in prepayments and other current assets 2,863,811 18,024,537 21,524,192 (77,397,505)
(Increase) decrease in due from related parties (527,581) (3,320,543) 3,592 (3,592)
(Increase) decrease in due from research-and-development entity partners 499,944 3,146,600 (10,783,600)  
Decrease in inventories 18,579 116,934 290,102 728,747
Increase in other assets       (85,239,597)
Increase in payables and accrued expenses 2,404,512 15,133,759 22,543,374 29,302,376
Increase (decrease) in advance from distributors 1,083,702 6,820,714 (14,057,759) 2,945,310
Increase in due to a related party 124,379 782,830    
Increase in unrecognized tax benefit 4,717,699 29,692,724 4,803,660 5,142,414
(Decrease) increase in income tax payable 2,600,804 16,369,200 16,807,255 (11,358,696)
(Decrease) increase in deferred revenue 13,729,068 86,409,383 121,503,917 (81,839,193)
Net cash provided by operating activities 202,528,201 1,274,692,242 1,032,138,908 751,758,884
Cash flows from investing activities:        
Payment for short-term investments (593,156,547) (3,733,267,990) (6,823,806,000) (3,239,964,493)
Proceeds received from maturity of short-term investments 960,858,503 6,047,547,330 7,872,494,000 2,810,062,992
Deposit for purchase of an office building     (18,921,000)  
Investment in equity investees (50,374,172) (317,050,000) (3,000,000)  
Increase in long-term investments (1,429,956) (9,000,000) (20,495,239)  
Payment for available-for-sale investments       (34,157,500)
Payment for held-to-maturity securities (15,888,400) (100,000,000)   (500,000,000)
Purchase of property and equipment (38,858,558) (244,571,881) (20,880,588) (20,969,714)
Capitalized product development costs and purchased software (1,748,081) (11,002,249) (15,653,901) (35,383,116)
Proceeds from deconsolidation of a subsidiary      28,625,000  
Deconsolidation of subsidiaries (732,281) (4,608,901) (25,000,000)  
Proceeds from disposal of intangible assets 3,972,100 25,000,000    
Proceeds from disposal of property and equipment 35,523 223,580    
Acquisition of a subsidiary, net of cash acquired     (15,016,811) (1,510,103)
Net cash (used in) provided by investing activities 262,678,131 1,653,269,889 958,345,461 (1,021,921,934)
Cash flows from financing activities:        
Proceeds from exercise of share options 22,007,263 138,511,514 17,760,783 18,734,326
Dividends to shareholders (764,258,214) (4,810,164,772) (279,122,994) (277,652,205)
Dividends to non controlling interests (1,946,329) (12,250,000)    
Repurchase of shares (3,648,097) (22,960,759)   (62,846,075)
Capital contribution from non controlling interests 148,874 937,000 10,737,017 5,145,000
Capital contribution to non controlling interests (564,753) (3,554,500)    
Net cash used in financing activities (748,261,256) (4,709,481,517) (250,625,194) (316,618,954)
Effect of exchange rate changes on cash and cash equivalents (7,165,018) (45,095,908) (60,078,122) (12,335,583)
Net (decrease) increase in cash and cash equivalents (290,219,942) (1,826,615,294) 1,679,781,053 (599,117,587)
Cash and cash equivalents at the beginning of year 441,210,747 2,776,936,322 1,097,155,269 1,696,272,856
Cash and cash equivalents at the end of year 150,990,805 950,321,028 2,776,936,322 1,097,155,269
Supplemental disclosures:        
Income tax paid (17,390,574) (109,454,531) (116,066,099) (99,688,366)
Withholding income tax paid associated with the repatriation of cash for a special dividend (17,692,883) (111,357,239)    
Tax benefit realized from stock options 1,069,520 6,731,453 920,398 555,978
Interest received 24,413,801 153,658,020 150,531,887 72,139,558
Non-cash investing activities: Deconsolidation of subsidiaries        
- Intangible assets     25,000,000  
- Due from related parties 9,125 57,429 (25,000,000)  
- Non-controlling interests (342,957) (2,158,537) 3,750,000  
- Acquisition of property and equipment and intangible assets included in payables and accrued expenses 820,639 5,165,018 1,889,955 (3,161,223)
- Investment in Huayi Giant Information     (32,774,051)