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Organization and principal activities (Details) ¥ in Millions |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 26, 2019 CNY (¥) shares | Sep. 30, 2021 segment | Mar. 31, 2022 segment | Nov. 26, 2019 $ / shares
Organization and principal activities |  |  |  |
Number of operating segment | segment |  | 4 | 7 |
Number of reportable segment | segment |  | 4 | 7 |
Global offering |  |  |  |
Organization and principal activities |  |  |  |
Shares issued (in shares) | shares | 575,000,000 |  |  |
Price of share issued (in HKD per share) | $ / shares |  |  |  | $ 176
Net proceeds raised by the Company from the global offering | ¥ | ¥ 90,442 |  |  |
Over-allotment option |  |  |  |
Organization and principal activities |  |  |  |
Shares issued (in shares) | shares | 75,000,000 |  |  |

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