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Prepayments and other current assets
 6 Months Ended
Jun. 30, 2024
Prepaid Expense and Other Assets, Current [Abstract]  
Prepayments and other current assets Prepayments and other current assets
Prepayments and other current assets consisted of the following:

As of December 31,As of June 30,
20232024
RMBRMB
Prepayments to suppliers302,421 271,769 
Contract cost assets104,309 61,179 
Others36,770 73,756 
Prepayments and other current assets443,500 406,704 

Nil provision was made for prepayments and other current assets as of December 31, 2023 and June 30, 2024.