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Related Party Balances and Transactions - Sale of raw material or property, plant and equipment (Details) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2020
Related Party Balances and Transactions    
Sale of raw material or property, plant and equipment ¥ 1,012 ¥ 478
Wuhan Weineng Battery Assets Co., Ltd.    
Related Party Balances and Transactions    
Sale of raw material or property, plant and equipment ¥ 1,012 120
Wistron Info Comm (Kunshan) Co., Ltd.    
Related Party Balances and Transactions    
Sale of raw material or property, plant and equipment   ¥ 358