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v3.19.1

Summary of significant accounting policies (Details 2) - CNY (¥) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Nonrecourse securitization debt |  |  |
Consumer credit receivables financial assets derecognized | ¥ 17,500,000,000 | ¥ 8,000,000,000 |
Proceeds from derecognition | 17,500,000,000 | 8,000,000,000 | ¥ 0
Accounts receivables |  |  |
Nonrecourse securitization debt |  |  |
Collateralized amount | 3,116,309,000 | 11,701,973,000 |
Consumer credit receivables financial assets derecognized | 12,632,342,000 | 5,693,223,000 |
Loan receivables |  |  |
Nonrecourse securitization debt |  |  |
Collateralized amount | 1,281,361,000 | 4,512,764,000 |
Consumer credit receivables financial assets derecognized | ¥ 4,867,658,000 | ¥ 2,306,777,000 |
Nonrecourse securitization debt |  |  |
Nonrecourse securitization debt |  |  |
Weighted average interest rate | 5.81% | 5.33% |
Minimum |  |  |
Land use rights, net |  |  |
Estimated useful lives (in years) | 34 years |  |
Maximum |  |  |
Land use rights, net |  |  |
Estimated useful lives (in years) | 70 years |  |
Strategic Cooperation Agreement |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 5 years |  |
Non-compete Agreement | Minimum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 5 years |  |
Non-compete Agreement | Maximum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 8 years |  |
Technology | Minimum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 2 years |  |
Technology | Maximum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 7 years |  |
Domain names and trademarks | Minimum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 5 years |  |
Domain names and trademarks | Maximum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 20 years |  |
Others | Minimum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 2 years |  |
Others | Maximum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 10 years |  |

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