v3.26.1
Summary of significant accounting policies (Details Narrative)
6 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
shares
Mar. 31, 2026
CNY (¥)
shares
Mar. 31, 2025
USD ($)
shares
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Oct. 01, 2023
USD ($)
Product Information [Line Items]            
Cumulative-effect adjustment to accumulated deficit           $ 2,000
Inventory write down        
Deferred revenue 4,796,000     $ 1,566,000    
Deferred revenue recognized       $ 1,100,000 $ 4,625,000  
Entertainment expense 290,000   534,000      
Advertising expense 282,000   530,000      
Employee social benefits 180,000   $ 189,000      
Payments for Other Taxes $ 14 ¥ 100        
Number of reportable segments true true        
Restricted Stock Units (RSUs) [Member]            
Product Information [Line Items]            
Anti-dilutive effect of restricted share units | shares 10,562      
Selling Consumer Products [Member]            
Product Information [Line Items]            
VAT rate 13.00% 13.00%        
Service [Member]            
Product Information [Line Items]            
VAT rate 6.00% 6.00%        
Transferred over Time [Member]            
Product Information [Line Items]            
Revenues        
Transferred at Point in Time [Member]            
Product Information [Line Items]            
Revenues $ 29,543,000   $ 79,871,000