XML 19 R8.htm IDEA: XBRL DOCUMENT
v3.25.3

Unaudited Interim Condensed Consolidated Statements of Cash Flows (Parentheticals) | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Statement of Cash Flows [Abstract] |  |
Issuance of common stock for interest in SH Xianzhui | 13.3333% | 13.3333%

X
- Definition Represents amount of common stock interest. + References No definition available. + Details
Name: | gdc_IssuanceOfCommonStockForInterest
Namespace Prefix: | gdc_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

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