Nature of Business and Organization - Schedule of Consolidated Financial Statements Reflect the Activities of GDC (Details)	6 Months Ended
	Jun. 30, 2026
Citi Profit Investment Holding Limited (“Citi Profit BVI”) [Member]
Schedule of Consolidated Financial Statements Reflect the Activities of GDC [Line Items]
Background	A British Virgin Island company Incorporated in April 2019
Ownership	100.00%
Highlights Culture Holding Co., Limited (“Highlight HK”) [Member]
Schedule of Consolidated Financial Statements Reflect the Activities of GDC [Line Items]
Background	A Hong Kong companyIncorporated in November 2022
Ownership	100.00%
Shanghai Highlight Entertainment Co., Ltd. (“Highlight WFOE”) [Member]
Schedule of Consolidated Financial Statements Reflect the Activities of GDC [Line Items]
Background	A PRC limited liability company and deemed a wholly foreign owned enterprise (WFOE)Incorporated in January 2023
Ownership	100.00%
AI Catalysis [Member]
Schedule of Consolidated Financial Statements Reflect the Activities of GDC [Line Items]
Background	A Nevada companyIncorporated in May 2023
Ownership	100.00%
Shanghai Xianzhui Technology Co., Ltd. (“SH Xianzhui”) [Member]
Schedule of Consolidated Financial Statements Reflect the Activities of GDC [Line Items]
Background	A PRC limited liability company
Ownership	73.3333%
Pallas Capital Holding Ltd (“Pallas”) [Member]
Schedule of Consolidated Financial Statements Reflect the Activities of GDC [Line Items]
Background	Incorporated in August 2023A British Virgin Island company Incorporated in June 2025 and acquired on September 29, 2025
Ownership	100.00%