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SHARE-BASED COMPENSATION - Summary of Stock-Based Compensation Expense (Details) - CNY (¥) ¥ in Thousands | 6 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
stockbased compensation expense [Line Items] |  |  |  |
share-based compensation expenses | ¥ 283,046 | ¥ 1,709,251 | ¥ 447,961 | ¥ 1,808,174
Cost of revenues |  |  |  |
stockbased compensation expense [Line Items] |  |  |  |
share-based compensation expenses | 16,113 | 13,137 | 25,204 | 24,568
Sales and marketing expenses |  |  |  |
stockbased compensation expense [Line Items] |  |  |  |
share-based compensation expenses | 63,817 | 26,922 | 106,613 | 44,838
Research and development expenses |  |  |  |
stockbased compensation expense [Line Items] |  |  |  |
share-based compensation expenses | 115,117 | 58,633 | 184,945 | 95,321
General and administrative expenses |  |  |  |
stockbased compensation expense [Line Items] |  |  |  |
share-based compensation expenses | ¥ 87,999 | ¥ 1,610,559 | ¥ 131,199 | ¥ 1,643,447

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