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COMMITMENTS (Details) - 12 months ended Dec. 31, 2020 | USD ($) | CNY (¥)
--- | --- | ---
Statement Line Items [Line Items] |  |
Payment of lease liabilities | ¥ |  | ¥ 124
USD [Member] |  |
Statement Line Items [Line Items] |  |
Payment of lease liabilities | $ | $ 19 |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | chnr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Payment of lease liabilities. + References No definition available. + Details
Name: | chnr_PaymentsOfLeaseLiabilities
Namespace Prefix: | chnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | srt_CurrencyAxis=currency_USD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |