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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Intangible Assets, Net (Details) | 12 Months Ended
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Dec. 31, 2021
Software [Member] |
Intangible Assets, Net, Useful Lives [Abstract] |
Intangible asset, estimated useful life | 3 years

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- References No definition available. + Details
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Namespace Prefix: | cenn_
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Balance Type: | na
Period Type: | duration

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |