v3.26.1
Long-term investments (Details Narrative)
Dec. 31, 2025
USD ($)
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Schedule of Investments [Line Items]      
Long term investments $ 13,788 ¥ 96,911 ¥ 97,062
Investment 1 [Member]      
Schedule of Investments [Line Items]      
Impairment allowance 75,999 534,181  
Investment 2 [Member]      
Schedule of Investments [Line Items]      
Impairment allowance $ 80,939 ¥ 568,907