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v3.19.1

Taxation (Details 3) ¥ / shares in Units, ¥ in Thousands, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 CNY (¥) ¥ / shares | Dec. 31, 2017 CNY (¥) ¥ / shares | Dec. 31, 2016 CNY (¥) ¥ / shares | Dec. 31, 2018 USD ($) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2017 CNY (¥)
Reconciliation of differences between statutory tax rate and effective tax rate |  |  |  |  |  |
Statutory income tax rate (as a percent) | 25.00% | 25.00% | 25.00% |  |  |
Tax effect of preferential tax treatments (as a percent) | 8.30% | (942.70%) | 45.30% |  |  |
Tax effect of tax-exempt entities (as a percent) | (1.90%) | 588.60% | (36.10%) |  |  |
Effect on tax rates in different tax jurisdiction (as a percent) | 2.20% | 30.50% | (3.60%) |  |  |
Tax effect of non-deductible expenses (as a percent) | (42.40%) | 536.00% | (28.10%) |  |  |
Tax effect of non-taxable income (as a percent) | 3.80% | (14.00%) | 0.10% |  |  |
Tax effect of Super Deduction and others (as a percent) | 53.90% |  |  |  |  |
Changes in valuation allowance (as a percent) | (66.70%) | (120.80%) | (11.40%) |  |  |
Expiration of loss carry forwards (as a percent) | (0.20%) | 12.80% | 0.00% |  |  |
Effective tax rates (as a percent) | (18.00%) | 115.40% | (8.80%) |  |  |
Effect of tax holiday |  |  |  |  |  |
Tax holiday effect | ¥ 198,118 | ¥ 1,140,251 | ¥ 852,776 |  |  |
Effect of tax holiday on basic net loss per share | ¥ / shares | ¥ 0.07 | ¥ 0.40 | ¥ 0.30 |  |  |
Effect of tax holiday on diluted net loss per share | ¥ / shares | ¥ 0.07 | ¥ 0.39 | ¥ 0.30 |  |  |
Deferred tax assets |  |  |  |  |  |
Net operating loss carry forwards |  |  |  |  | ¥ 2,028,350 | ¥ 1,162,287
Deferred revenues |  |  |  |  | 283,824 | 299,723
Inventory valuation allowance |  |  |  |  | 217,215 | 124,693
Allowance for doubtful accounts |  |  |  |  | 88,036 | 52,117
Unrealized fair value loss for certain investments |  |  |  |  | 482,027 |
Less: valuation allowance | ¥ (1,480,570) | ¥ (1,626,680) | ¥ (1,299,200) |  | (2,996,294) | (1,480,570)
Net deferred tax assets |  |  |  | $ 15,004 | 103,158 | 158,250
Deferred tax liabilities |  |  |  |  |  |
Intangible assets arisen from business combination |  |  |  |  | 819,032 | 882,248
Others |  |  |  |  | 9,441 |
Total deferred tax liabilities |  |  |  | $ 120,496 | 828,473 | ¥ 882,248
Movement of valuation allowance |  |  |  |  |  |
Balance at beginning of the period | 1,480,570 | 1,626,680 | 1,299,200 |  |  |
Additions | 2,755,222 | 807,558 | 1,324,793 |  |  |
Reversals | (1,239,498) | (953,668) | (997,313) |  |  |
Balance at end of the period | ¥ 2,996,294 | ¥ 1,480,570 | ¥ 1,626,680 |  |  |
Company's subsidiaries incorporated in Singapore and Hong Kong |  |  |  |  |  |
Net operating loss carry forwards |  |  |  |  |  |
Net operating loss carry forwards |  |  |  |  | 3,794,138 |
Company's subsidiaries, consolidated VIEs and VIEs' subsidiaries established in PRC and Indonesia |  |  |  |  |  |
Net operating loss carry forwards |  |  |  |  |  |
Net operating loss carry forwards |  |  |  |  | ¥ 6,174,368 |

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