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Organization and Principal Activities - Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements (Details) - 9 months ended Sep. 30, 2026	USD ($)	CNY (¥)	HKD ($)
Zhongchai Holding (Hong Kong) Limited [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Domicile and Date of Incorporation	Apr. 23, 2009
Zhongchai Holding (Hong Kong) Limited [Member] \| Hong Kong [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Paid-in Capital			$ 10,000
Ownership Percentage	100.00%
Principal Activities	Holding
Zhejiang Zhongchai Machinery Co., Ltd. [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Domicile and Date of Incorporation	Nov. 21, 2005
Zhejiang Zhongchai Machinery Co., Ltd. [Member] \| PRC [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Paid-in Capital \| ¥		¥ 20,000,000
Ownership Percentage	89.47%
Principal Activities	Manufacture, sale of various transmission boxes
Hangzhou Greenland Energy Technologies Co., Ltd. [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Domicile and Date of Incorporation	Aug. 09, 2019
Hangzhou Greenland Energy Technologies Co., Ltd. [Member] \| PRC [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Paid-in Capital \| ¥		¥ 8,669,482
Ownership Percentage	100.00%
Principal Activities	Trading
HEVI Corp. [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Domicile and Date of Incorporation	Jan. 14, 2020
HEVI Corp. [Member] \| Delaware [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Paid-in Capital	$ 6,363,557
Ownership Percentage	100.00%
Principal Activities	Business operations related to and distribution of electric industrial vehicles for North American market have been suspended since 2025
Hengyu Capital, Ltd [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Domicile and Date of Incorporation	Aug. 16, 2022
Hengyu Capital, Ltd [Member] \| Hong Kong [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Paid-in Capital			$ 10,000
Ownership Percentage	62.50%
Principal Activities	Investment management and consulting services
Greenland Holding Enterprises Inc. [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Domicile and Date of Incorporation	Aug. 28, 2023
Greenland Holding Enterprises Inc. [Member] \| Delaware [Member]
Schedule of Subsidiaries Included in these Unaudited Consolidated Financial Statements [Line Items]
Paid-in Capital	$ 1
Ownership Percentage	100.00%
Principal Activities	Holding