Financial risk management - Schedule of Analysis of Current Ratio and Gearing Ratio (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)
Schedule Of Analysis Of Current Ratio And Gearing Ratio Abstract
Total liabilities	¥ 1,205,246	$ 172,347	¥ 1,404,778
Total assets	¥ 312,572	$ 44,696	¥ 650,644
Total liabilities to total assets ratio	3.86	3.86	2.16

The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

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+ Details

- Definition

The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

+ References

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+ Details