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v3.25.3

Income Taxes (Details) | 6 Months Ended
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Jun. 30, 2025 CNY (¥)
Income Taxes [Abstract] |
Underpayment of taxes | ¥ 100

X
- Definition The amount of underpayment of taxes. + References No definition available. + Details
Name: | jz_UnderpaymentOfTaxes
Namespace Prefix: | jz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration