v3.26.3
Related party balances and transactions - Amounts due to related parties (Details)
Jun. 30, 2026
CNY (¥)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
CNY (¥)
Related party balances and transactions      
Amounts due to related parties ¥ 257,756 $ 37,989 ¥ 462,837
Other Liability, Current, Related Party [Extensible Enumeration] Related Party Related Party Related Party
Related Party      
Related party balances and transactions      
Amounts due to related parties ¥ 257,756 $ 37,989 ¥ 462,837
Mr. Yuan Li | Related Party      
Related party balances and transactions      
Amounts due to related parties ¥ 202,372 $ 29,826 ¥ 417,062
Other Liability, Current, Related Party [Extensible Enumeration] Related Party Related Party Related Party
JD LIYUAN LIMITED | Related Party      
Related party balances and transactions      
Amounts due to related parties ¥ 55,384 $ 8,163 ¥ 45,732
Other Liability, Current, Related Party [Extensible Enumeration] Related Party Related Party Related Party
Mr. Xiang Lan | Related Party      
Related party balances and transactions      
Amounts due to related parties     ¥ 43
Other Liability, Current, Related Party [Extensible Enumeration] Related Party Related Party Related Party