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Consolidated Statements of Comprehensive Income/(Loss) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2020 CNY (¥) ¥ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 CNY (¥) ¥ / shares shares | Dec. 31, 2018 CNY (¥) ¥ / shares shares
Income Statement [Abstract] |  |  |  |
Revenues | ¥ 897,035 | $ 137,477 | ¥ 1,447,899 | ¥ 1,424,234
Cost of revenues | (607,077) | (93,039) | (755,356) | (627,996)
Gross profit | 289,958 | 44,438 | 692,543 | 796,238
Operating expenses: |  |  |  |
Selling and marketing expenses | (310,433) | (47,576) | (437,986) | (425,217)
General and administrative expenses | (348,435) | (53,400) | (449,903) | (293,157)
Research and development expenses | (31,878) | (4,886) | (32,333) | (26,178)
Income/(loss) from operations | (400,788) | (61,424) | (227,679) | 51,686
Other income (expenses): |  |  |  |
Interest income | 448 | 69 | 1,633 | 1,150
Interest expenses | (6,101) | (935) | (2,453) | (8)
Foreign currency exchange gain/(loss), net | (382) | (59) | (19) | 21
Gains/(losses) on disposal and closure of subsidiaries and branches | (31,884) | (4,886) | 583 |
Gains on available-for-sale investments |  |  |  | 3,916
Gains on Short-term investments | 495 | 76 |  |
Government grants | 28,124 | 4,310 | 5,773 | 7,817
Equity in income/(loss) on equity method investments | (1,532) | (235) | 2,658 | 1,668
Others, net | 4,640 | 711 | 4,044 | 1,649
Income/(loss) before income tax | (406,980) | (62,373) | (215,460) | 67,899
Income tax expense | (5,803) | (889) | (9,608) | (14,454)
Net income/(loss) | (412,783) | (63,262) | (225,068) | 53,445
Less: Net loss attributable to non-controlling interests | (1,798) | (276) | (5,664) | (3,809)
Net income/(loss) attributable to shareholders of the Company | (410,985) | (62,986) | (219,404) | 57,254
Less: Accretion of Redeemable Owners’ Investment |  |  |  | 9,814
Net income/(loss) available to shareholders of the Company | (410,985) | (62,986) | (219,404) | 47,440
Net income/(loss) | (412,783) | (63,262) | (225,068) | 53,445
Other comprehensive income |  |  |  |
Unrealized holding gains on available-for-sale investments, net of income tax of RMB 932 for the years ended December 31, 2018, respectively |  |  |  | 2,797
Less: Reclassification adjustment for gains on available-for-sale investments realized in net income, net of income tax of and RMB 979 for the years ended December 31, 2018 |  |  |  | 2,937
Comprehensive income/(loss) | ¥ (412,783) | $ (63,262) | ¥ (225,068) | ¥ 53,305
Net income/(loss) per share |  |  |  |
- Basic (in Dollars per share and Yuan Renminbi per share) | (per share) | ¥ (7.38) | $ (1.13) | ¥ (4.53) | ¥ 1.04
- Diluted (in Dollars per share and Yuan Renminbi per share) | (per share) | ¥ (6.24) | $ (0.96) | ¥ (4.53) | ¥ 1.01
Weighted average shares used in calculating net income/(loss) per share |  |  |  |
- Basic (in Shares) | 55,661,445 | 55,661,445 | 48,391,607 | 45,626,027
- Diluted (in Shares) | 65,842,020 | 65,842,020 | 48,391,607 | 46,997,775

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