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Income taxes - Net operating loss carryforwards (Details) - CNY (¥) ¥ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Other than PRC
Net operating loss carryforwards
Net operating loss carryforwards	¥ 87,051	¥ 11,893
PRC
Net operating loss carryforwards
2026	8,118
2027	648,012
Net operating loss carryforwards	¥ 656,130

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws expiring in year 2026.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws expiring in year 2027 to 2031.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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