XML 62 R37.htm IDEA: XBRL DOCUMENT v3.23.1
Long-Term Borrowing (Tables)
12 Months Ended
Dec. 31, 2022
Short-Term Borrowings [Abstract]  
Schedule of long-term borrowing due to maturing
   As of 
   December 31,   December 31, 
   2021   2022 
   RMB   RMB   US$ 
Postal Savings Bank of China   4,450,000    5,000,000    717,916 
Less: to be matured within one year   (600,000)   (600,000)   (86,150)
Total   3,850,000    4,400,000    631,766