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CONDENSED FINANCIAL INFORMATION OF THE COMPANY - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) | Dec. 31, 2015 CNY (¥) | Dec. 31, 2014 USD ($) | Dec. 31, 2014 CNY (¥) | Dec. 31, 2013 USD ($) | Dec. 31, 2013 CNY (¥)
Revenue | [1] | $ 568,778 | ¥ 3,684,429 |  | ¥ 1,763,579 |  | ¥ 749,911
Cost of revenues | [1] | (144,363) | (935,154) |  | (403,412) |  | (140,526)
Gross profit |  | 424,415 | 2,749,275 |  | 1,360,167 |  | 609,385
Operating expenses |  |  |  |  |  |  |
Research and development | [1] | (106,091) | (687,235) |  | (436,840) |  | (217,846)
Selling and marketing | [1] | (228,386) | (1,479,441) |  | (580,610) |  | (201,504)
General and administrative | [1] | (65,338) | (423,248) |  | (251,743) |  | (97,817)
Other income (expenses) |  |  |  |  |  |  |
Interest income, net |  | 2,245 | 14,545 |  | 28,216 |  | 7,077
Losses from equity method investments |  | (1,441) | (9,334) | $ (5,447) | (5,447) | $ (1,849) | (1,849)
Impairment of investments |  | (5,361) | (34,728) |  | (9,136) |  |
Settlement and changes in fair value of contingent considerations |  | (1,082) | (7,010) |  | 13,749 |  | 1,067
Foreign exchange gain (loss), net |  | (39) | (250) |  | 16 |  | 920
Other income, net |  | 7,282 | 47,173 |  | 3,959 |  | 2,243
Income before taxes |  | 35,717 | 231,375 |  | 90,904 |  | 110,688
Income tax expenses |  | (9,277) | (60,097) |  | (23,993) |  | (48,670)
Net income attributable to Cheetah Mobile Inc. |  | 27,261 | 176,596 |  | 67,941 |  | 62,018
Other comprehensive (loss) income, net of tax of nil |  |  |  |  |  |  |
Unrealized gains on available-for-sale securities, net |  | 1,502 | 9,729 |  | 18,119 |  | 20,929
Foreign currency translation adjustments |  | 18,213 | 117,977 |  | (6,960) |  | (6,087)
Total comprehensive income attributable to Cheetah Mobile Inc. |  | 45,851 | 297,018 |  | 58,075 |  | 76,860
Cheetah |  |  |  |  |  |  |
Revenue |  | 30,356 | 196,640 |  | 22,002 |  | 2,070
Cost of revenues |  | (3,169) | (20,531) |  | (17,752) |  | (1,950)
Gross profit |  | 27,187 | 176,109 |  | 4,250 |  | 120
Operating expenses |  |  |  |  |  |  |
Research and development |  | (11,489) | (74,426) |  | (44,011) |  | (12,491)
Selling and marketing |  | (17) | (107) |  | (31) |  |
General and administrative |  | (4,829) | (31,279) |  | (13,103) |  | (15,146)
Total operating expenses |  | (16,335) | (105,812) |  | (57,145) |  | (27,637)
Other income (expenses) |  |  |  |  |  |  |
Equity in profit of subsidiaries |  | 20,608 | 133,495 |  | 99,213 |  | 76,031
Interest income, net |  | 1,107 | 7,169 |  | 20,908 |  | 2,494
Changes in fair value of redemption right and put options granted |  |  |  |  | 3,576 |  | 11,146
Losses from equity method investments |  | (6) | (42) |  |  |  |
Impairment of investments |  | (3,997) | (25,891) |  |  |  |
Settlement and changes in fair value of contingent considerations |  | 109 | 707 |  | 1,755 |  | 973
Foreign exchange gain (loss), net |  | 60 | 389 |  | (17) |  | 946
Other income, net |  | 250 | 1,620 |  |  |  |
Income before taxes |  | 28,765 | 186,330 |  | 69,030 |  | 62,127
Income tax expenses |  | (1,503) | (9,734) |  | (1,089) |  | (109)
Net income attributable to Cheetah Mobile Inc. |  | 27,262 | 176,596 |  | 67,941 |  | 62,018
Other comprehensive (loss) income, net of tax of nil |  |  |  |  |  |  |
Unrealized gains on available-for-sale securities, net |  | 455 | 2,945 |  |  |  |
Foreign currency translation adjustments |  | 18,135 | 117,477 |  | (6,918) |  | (8,807)
Other comprehensive income |  | 18,590 | 120,422 |  | (6,918) |  | (8,807)
Total comprehensive income attributable to Cheetah Mobile Inc. |  | $ 45,852 | ¥ 297,018 |  | ¥ 61,023 |  | ¥ 53,211
[1] | The amount of transactions with related parties recorded in revenue, cost of revenues and operating income (expenses) are as follows: year ended December 31, 201320142015 RMBRMBRMBUS$ Revenues 111,218 86,708 321,881 49,690Cost of revenues (9,296) (4,767) (31,316) (4,834)Research and development (4,174) (4,212) (4,500) (695)Selling and marketing (256) (27,931) (108,422) (16,737)General and administrative (2,021) (5,158) (5,072) (783)Details of the related party transactions are set out in note 16 (b) to the consolidated financial statements.

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