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Consolidated Statements Of Cash Flows In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 USD ($) | Dec. 31, 2012 CNY | Dec. 31, 2011 CNY | Dec. 31, 2010 CNY
Cash flows from operating activities: |  |  |  |
Net income | $ 1,667,915 | 10,391,278 | 6,620,318 | 3,525,168
Adjustments to reconcile net income to net cash generated from operating activities: |  |  |  |
Depreciation of fixed assets and computer parts | 205,669 | 1,281,336 | 819,239 | 431,099
Loss (gain) on disposal of fixed assets | (447) | (2,783) | 31 | 7,679
Amortization of intangible assets | 37,560 | 234,001 | 65,673 | 10,252
Deferred income tax, net | (9,475) | (59,030) | (64,701) | (74,374)
Share-based compensation | 34,078 | 212,309 | 152,028 | 93,736
(Reversal of) provision for doubtful accounts | (136) | (847) | 3,500 | (6,940)
Investment income | (119,665) | (745,526) | (200,209) | (41,193)
Net gain from step-acquisition and settlement of pre-existing relationship (Note3) | (78,063) | (486,339) | 0 | 0
Impairment on long-term investments | 27,155 | 169,180 | 47,886 | 0
Loss from equity method investments | 47,227 | 294,229 | 179,408 | 8,965
Gain on disposal of a subsidiary | (2,446) | (15,238) | 0 | 0
Other noncash income | (9,236) | (57,544) | (36,813) | 0
Changes in operating assets and liabilities, net of effects of acquisition: |  |  |  |
Restricted cash | 13,712 | 85,429 | (156,219) | (18,765)
Accounts receivable | (54,349) | (338,602) | (282,467) | (128,307)
Other assets | (1,710) | (10,664) | (211,719) | (28,560)
Amounts due from related parties | (127,527) | (794,508) | (151,068) | (98,660)
Customer advances and deposits | 78,613 | 489,769 | 519,716 | 421,516
Accounts payable and accrued liabilities | 124,878 | 778,003 | 817,649 | 431,168
Deferred revenue | 5,043 | 31,416 | (46,327) | 66,997
Deferred income | 32,068 | 199,785 | 49,721 | 5,000
Amounts due to related parties | 54,628 | 340,340 | 53,173 | 95,700
Net cash generated from operating activities | 1,925,492 | 11,995,994 | 8,178,819 | 4,700,481
Cash flows from investing activities: |  |  |  |
Acquisition of fixed assets | (370,919) | (2,310,860) | (1,762,114) | (895,309)
Acquisition of computer parts | (4,639) | (28,901) | (104,064) | (68,179)
Disposal of fixed assets | 1,089 | 6,785 | 2,461 | 0
Acquisition of businesses, net of cash acquired | (131,704) | (820,526) | (1,945,870) | 0
Acquisition of intangible assets | (30,546) | (190,303) | (433,591) | (2,452)
Capitalization of software costs | (5,829) | (36,315) | (42,687) | (10,179)
Purchases of short-term investments | (5,239,485) | (32,642,517) | (10,972,774) | (2,620,265)
Sales and maturities of short-term investments | 3,664,373 | 22,829,412 | 1,484,968 | 2,661,794
Purchases of long-term investments | (89,672) | (558,666) | (488,905) | (282,932)
Proceeds from disposal of long-term investments | 0 | 0 | 12,047 | 0
Cash distribution of long-term investments | 451 | 2,811 | 0 | 0
Payments to acquire a subsidiary's shares from noncontrolling interests | (164) | (1,020) | 0 | 0
Net cash used in investing activities | (2,207,045) | (13,750,100) | (14,250,529) | (1,217,522)
Cash flows from financing activities: |  |  |  |
Proceeds from issuance of a subsidiary's shares | 16,125 | 100,460 | 43,970 | 0
Proceeds from short-term loans | 0 | 0 | 125,878 | 0
Repayment of short-term loans | (20,000) | (124,602) | 0 | 0
Proceeds from long-term loans | 57,062 | 355,499 | 2,232,778 | 86,000
Repayment of long-term loans | (22,472) | (140,000) | 0 | 0
Proceeds from issuance of notes payable | 1,492,380 | 9,297,678 | 0 | 0
Payment of capital lease obligation | (4,354) | (27,124) | 0 | 0
Proceeds from exercise of share options | 9,145 | 56,974 | 23,184 | 38,751
Net cash generated from financing activities | 1,527,886 | 9,518,885 | 2,425,810 | 124,751
Effect of exchange rate changes on cash and cash equivalents | (1,867) | (11,629) | (8,594) | (6,110)
Net increase (decrease) in cash and cash equivalents | 1,244,466 | 7,753,150 | (3,654,494) | 3,601,600
Cash and cash equivalents at beginning of the year | 662,507 | 4,127,482 | 7,781,976 | 4,180,376
Cash and cash equivalents at end of the year | 1,906,973 | 11,880,632 | 4,127,482 | 7,781,976
Supplemental disclosures: |  |  |  |
Interest paid | 6,104 | 38,027 | 17,521 | 709
Income taxes paid | 263,536 | 1,641,853 | 1,165,218 | 436,632
Non-cash investing and financing activities: |  |  |  |
Capital lease obligation | 9,024 | 56,220 | 47,885 | 0
Acquisition of fixed assets included in accounts payable and accrued liabilities | 53,366 | 332,473 | 245,794 | 248,540
Acquisition of other non-current assets included in accounts payable and accrued liabilities | 6,286 | 39,165 | 30,938 | 29,130
Non-cash acquisitions of investments | 113,205 | 705,281 | 194,286 | 3,982
Non-cash acquisitions of subsidiaries | $ 54,324 | 338,447 | 0 | 0

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