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Investments - Schedule of Net Investment Gain (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Realized gain from long-term investments:      
Realized gain from long-term investments $ 1,382,934 $ 336,241 $ 330,552
Trading securities [Member]      
Gain (loss) from sales of short-term investments:      
Gain (loss) from sales of short-term investments 51,371 (2,098) 31,097
Unrealized gain from short-term investments:      
Unrealized gain from short-term investments 122,337 87,513 49,245
Held-to-maturity securities [Member]      
Gain (loss) from sales of short-term investments:      
Gain (loss) from sales of short-term investments 1,209,226 250,826 195,415
Realized gain from long-term investments:      
Realized gain from long-term investments $ 54,795