v3.26.1
Segment reporting (Details 3) - USD ($)
 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Total revenue $ 6,394,713 $ 16,144,309
Cost of revenues (7,484,087) (15,329,735)
Gross (loss) profit (1,089,374) 814,574
Total operating expenses (37,437,587) (1,483,318)
Loss from operations (38,526,961) (668,744)
Total other income (expenses), net 936,540 417,086
Loss before income taxes (37,590,421) (251,658)
Income tax expenses 0 0
Net loss (37,590,421) (251,658)
PRC [Member]    
Total revenue 3,700,629 12,736,774
Cost of revenues (3,349,148) (11,376,192)
Gross (loss) profit 351,481 1,360,582
Total operating expenses (36,202,818) (237,140)
Loss from operations (35,851,337) 1,123,442
Total other income (expenses), net (363) (77,920)
Loss before income taxes (35,851,700) 1,045,522
Income tax expenses 0 0
Net loss (35,851,700) 1,045,522
United States of America [Member]    
Total revenue 2,694,084 3,407,535
Cost of revenues (4,134,939) (3,953,543)
Gross (loss) profit (1,440,855) (546,008)
Total operating expenses (1,234,769) (1,246,178)
Loss from operations (2,675,624) (1,792,186)
Total other income (expenses), net 936,903 495,006
Loss before income taxes (1,738,721) (1,297,180)
Income tax expenses 0 0
Net loss $ (1,738,721) $ (1,297,180)