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Cash and restricted cash
6 Months Ended
Jun. 30, 2024
Cash and Cash Equivalents [Abstract]  
Cash and restricted cash Cash and restricted cash
A reconciliation of cash and restricted cash in the unaudited condensed consolidated balance sheets to the amounts in the unaudited condensed consolidated statements of cash flows is as follows:

As of December 31,As of June 30,
20232024
RMBRMB
Cash at banks571,760 787,639 
Restricted cash27,126 159 
Cash and restricted cash shown in the unaudited condensed consolidated statements of cash flows598,886 787,798 

Cash and restricted cash are deposited in financial institutions at the locations noted below:
As of December 31,As of June 30,
20232024
RMBRMB
Financial institutions in the mainland of the PRC
– Denominated in RMB528,022 732,805 
– Denominated in US$14,542 16,433 
– Denominated in Great Britain Pound (“GBP”)81 89 
– Denominated in Euro 109 
– Denominated in Hong Kong dollars (“HKD”) 11 
Total cash balances held in the mainland of the PRC542,645 749,447 
Financial institutions in Hong Kong
– Denominated in Hong Kong dollars (“HKD”)13 601 
– Denominated in RMB27 27 
Total cash balances held in Hong Kong40 628 
Financial institutions in Sweden
– Denominated in Swedish Krona (“SEK”) 39,584 34,742 
– Denominated in US$204 207 
Total cash balances held in Sweden39,788 34,949 
Financial institutions in the United Kingdom
– Denominated in Great Britain Pounds (“GBP”)12,356 562 
Total cash balances held in the United Kingdom12,356 562 
Financial institutions in the United States
– Denominated in US$3,867 2,079 
Total cash balances held in the United States3,867 2,079 
Financial institutions in Germany
– Denominated in Euro190 133 
Total cash balances held in Germany190 133 
Total cash balances held at financial institutions in RMB598,886 787,798 
As of December 31, 2023, the Group’s restricted cash of RMB3,513 were pledged for notes payable, and RMB23,613 restricted due to disputes on unpaid amounts to a supplier. As of June 30, 2024, the Group had restricted cash of RMB159 pledged for notes payable.