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Other Receivables (Details) - Schedule of Other Receivables - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Schedule of Other Receivables [Abstract]
Receivable from disposal of Wuge		$ 948,000
Receivable from disposal of Highlight Media	100,000
Interest receivable from convertible notes	46,575
Others		78,293
Total other receivables, net	$ 146,575	$ 1,026,293

X

- Definition

Represents the amount of receivable from disposal of TMSR HK.

+ References

No definition available.

+ Details

Name:	gdc_ReceivableFromDisposalOfTMSRHK
Namespace Prefix:	gdc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the amount of receivable from disposal of Wuge.

+ References

No definition available.

+ Details

Name:	gdc_ReceivableFromDisposalOfWuge
Namespace Prefix:	gdc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	gdc_ScheduleOfOtherReceivablesAbstract
Namespace Prefix:	gdc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer.

+ References

No definition available.

+ Details

Name:	us-gaap_AccountsAndOtherReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, before allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_OtherReceivablesGrossCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant