Prepayments and other assets  | 
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2021  | ||||||||||||||||||||||||||||||||||||||||||||||||
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| Prepayments and other assets | 
 
 Current prepayments and other assets primarily relate to prepaid chargers, charging equipment that have not yet been delivered to the Group prepaid software licenses with a duration of less than twelve months and other costs to fulfil a contract.   | 
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- Definition Text block. No definition available. 
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- Definition The disclosure of prepayments and other assets. [Refer: Other assets; Prepayments] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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