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v3.20.4

Taxation - Income taxes (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 HKD ($) | Dec. 31, 2019 HKD ($) | Dec. 31, 2018 HKD ($) | Dec. 31, 2020 CNY (¥)
Income taxes |  |  |  |  |
Income tax rate (as a percent) |  | 25.00% | 25.00% | 25.00% |
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate |  |  |  |  |
Statutory income tax rate |  | 25.00% | 25.00% | 25.00% |
Permanent differences |  | 0.60% | (0.83%) | (3.76%) |
Tax rate difference from statutory rate in other jurisdictions | [1] | (3.90%) | (0.39%) | (0.92%) |
Tax effect of preferential tax treatments |  | (8.29%) | (8.48%) | (3.15%) |
Withholding tax |  | (0.63%) | (1.33%) | (2.05%) |
Change in valuation allowance |  | (14.56%) | (16.80%) | (19.94%) |
Effective income tax rate |  | (1.78%) | (2.83%) | (4.82%) |
Operating loss carryforwards |  |  |  |  |
Net operating tax loss carry forwards |  |  |  |  | ¥ 3,582,503,000
Hong Kong [Member] |  |  |  |  |
Income taxes |  |  |  |  |
Existing tax rate |  | 16.50% | 16.50% | 16.50% |
Threshold limit for Revenue from Subsidiary | $ |  | $ 2 | $ 2 | $ 2 |
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate |  |  |  |  |
Half the current tax rate |  | 8.25% | 8.25% | 8.25% |
Loss expiring in 2021 |  |  |  |  |
Operating loss carryforwards |  |  |  |  |
Net operating tax loss carry forwards |  |  |  |  | 43,751,000
Loss expiring in 2022 |  |  |  |  |
Operating loss carryforwards |  |  |  |  |
Net operating tax loss carry forwards |  |  |  |  | 44,711,000
Loss expiring in 2023 |  |  |  |  |
Operating loss carryforwards |  |  |  |  |
Net operating tax loss carry forwards |  |  |  |  | 83,876,000
Loss expiring in 2024 |  |  |  |  |
Operating loss carryforwards |  |  |  |  |
Net operating tax loss carry forwards |  |  |  |  | 208,366,000
Loss expiring in 2025 and thereafter |  |  |  |  |
Operating loss carryforwards |  |  |  |  |
Net operating tax loss carry forwards |  |  |  |  | 3,201,799,000
Cayman Islands |  |  |  |  |
Income taxes |  |  |  |  |
Withholding tax amount |  |  |  |  | ¥ 0
Hong Kong |  |  |  |  |
Income taxes |  |  |  |  |
Income tax rate (as a percent) |  | 16.50% |  |  |
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate |  |  |  |  |
Statutory income tax rate |  | 16.50% |  |  |
China |  |  |  |  |
Income taxes |  |  |  |  |
Income tax rate (as a percent) |  | 25.00% |  |  |
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate |  |  |  |  |
Statutory income tax rate |  | 25.00% |  |  |
China | Certain subsidiaries | HNTEs |  |  |  |  |
Income taxes |  |  |  |  |
Preferential tax rate |  | 15.00% |  |  |
China | Certain subsidiaries | Encouraged Enterprises [Member] |  |  |  |  |
Income taxes |  |  |  |  |
Preferential tax rate |  | 15.00% |  |  |
[1] | It is primarily due to the tax effect of the Company as a tax-exempt entity incorporated in the Cayman Islands.

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