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Leases (Details) ¥ in Thousands, $ in Thousands			12 Months Ended
	Jan. 31, 2024 CNY (¥)	Jan. 31, 2024 USD ($)	Mar. 31, 2024 CNY (¥)	Mar. 31, 2023 CNY (¥)	Mar. 31, 2022 CNY (¥)	Mar. 31, 2024 USD ($)
Lease Liabilities [Line Items]
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]			Lease liability			Lease liability
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]			operating lease			operating lease
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]			current portion			current portion
Lease period	5 years
Operating lease income			¥ 3,100	¥ 3,100	¥ 2,900
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]			Total Finance lease liability			Total Finance lease liability
Financing proceeds total	¥ 6,500	$ 900
Sold lease equipment	¥ 6,500	$ 900
Right of use assets lease			¥ 9,781	13,030		$ 1,379
Interest rate	10.70%	10.70%
Inception lease	¥ 6,450
Amortization			40
Lease liability			¥ 10,875
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]			current portion			current portion
Lease liability current			¥ 3,938
Interest expenses total			100
Sale and leaseback deferred loss			800
Chailease International Financial Leasing Corp. [Member]
Lease Liabilities [Line Items]
Right of use assets lease	¥ 6,500
UTime Guangxi [Member]
Lease Liabilities [Line Items]
Lease liability			3,100
Lease liability current			2,900
Corresponding equipment [Member]
Lease Liabilities [Line Items]
Depreciation charges			2,600	¥ 2,900	¥ 2,700
Leased Equipment [Member]
Lease Liabilities [Line Items]
Amortization			¥ 6,460
Minimum [Member]
Lease Liabilities [Line Items]
Lease period			1 year			1 year
Maximum [Member]
Lease Liabilities [Line Items]
Lease period			3 years			3 years

X

- Definition

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

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Cost of goods sold for sales-type financing lease.

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Amount of interest expense on finance lease liability.

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Indicates line item in statement of financial position that includes current finance lease liability.

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Indicates line item in statement of financial position that includes finance lease liability.

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Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Indicates line item in statement of financial position that includes current operating lease liability.

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Indicates line item in statement of financial position that includes noncurrent operating lease liability.

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Amount of lessee's right to use underlying asset under operating lease.

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This element represents the loss resulting from the amount by which the cost or carrying amount, if different, of an asset subject to an agreement classified as an operating lease, at the inception of a lease involving real estate, exceeds the fair value of the leased property.

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The cash inflow from a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

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Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale.

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The financing cost related to leases that have been recorded under the deposit method, as a financing or as a capital leases in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

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Depreciation Charges

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