Leases - Summary of Lease Items Recognized in Combined Statements Of Financial Position (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)
Right-of-use assets
Right-of-use assets	¥ 4,804	$ 658	¥ 14,026	¥ 17,030
Lease liabilities
Current	1,254	172	7,154
Non-current	3,298	$ 452	6,936
Lease liabilities	4,552		14,090	16,180
Office building
Right-of-use assets
Right-of-use assets	250		12,231	12,558
Lease liabilities
Lease liabilities			12,413	12,619
Charging stations
Right-of-use assets
Right-of-use assets	4,554		1,795	4,472
Lease liabilities
Lease liabilities	¥ 4,552		¥ 1,677	¥ 3,561

The amount of current lease liabilities. [Refer: Lease liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

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The amount of non-current lease liabilities. [Refer: Lease liabilities]

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The amount of assets that represent a lessee's right to use an underlying asset for the lease term that do not meet the definition of investment property. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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