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Investment in equity investees (Details) ¥ in Thousands, $ in Millions | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Sep. 30, 2019 CNY (¥) | Jun. 30, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥) | Sep. 30, 2018 CNY (¥)
Measurement Alternative and NAV practical expedient investments |  |  |  |  |
Carrying amount of investment under NAV practical expedient |  | ¥ 2,231,999 |  | ¥ 944,378 |
Carrying values of equity investments measured at fair value using the Measurement Alternative |  | 21,359,464 |  | ¥ 17,104,784 |
Measurement alternative and NAV practical expedient investments |  | 5,930,682 |  |  | ¥ 11,082,268
AiHuiShou International Co Ltd |  |  |  |  |
Measurement Alternative and NAV practical expedient investments |  |  |  |  |
Cash consideration paid | $ | $ 20 |  |  |  |
Cost of investment |  |  | ¥ 3,380,825 |  |
Exclusive traffic resources | 5 years |  |  |  |
Top investee one |  |  |  |  |
Measurement Alternative and NAV practical expedient investments |  |  |  |  |
Measurement alternative and NAV practical expedient investments |  | 3,380,825 |  |  |
Top investee two |  |  |  |  |
Measurement Alternative and NAV practical expedient investments |  |  |  |  |
Measurement alternative and NAV practical expedient investments |  | ¥ 1,086,776 |  |  |

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