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Share-based awards- Expense by function (Details) - CNY (¥) ¥ in Millions | 6 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Share-based awards |  |
Share-based compensation expense | ¥ 32,409 | ¥ 15,260
Cost of revenue |  |
Share-based awards |  |
Share-based compensation expense | 7,331 | 3,780
Product development expenses |  |
Share-based awards |  |
Share-based compensation expense | 13,667 | 6,526
Sales and marketing expenses |  |
Share-based awards |  |
Share-based compensation expense | 3,237 | 1,852
General and administrative expenses |  |
Share-based awards |  |
Share-based compensation expense | ¥ 8,174 | ¥ 3,102

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