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Summary of Significant Accounting Policies (Details) - Schedule of Basic and Diluted Loss Per Share (Parentheticals) - CNY (¥) ¥ in Thousands | 12 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Schedule of Basic and Diluted Loss Per Share [Abstract] |  |
Net loss attributable to UTime Limited, diluted | ¥ (60,884) | ¥ (87,616)
Weighted average shares outstanding, diluted | 16,550,762 | 11,229,985

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