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Related Party Balances and Transactions - Sales of goods (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Related Party Balances and Transactions |  |  |
Sales of goods | ¥ 3,105,898 | ¥ 4,139,199 | ¥ 298,489
Wuhan Weineng Battery Assets Co., Ltd. |  |  |
Related Party Balances and Transactions |  |  |
Sales of goods | 3,103,871 | 4,138,187 | 290,135
Hefei Chuangwei Information Consultation Co., Ltd. |  |  |
Related Party Balances and Transactions |  |  |
Sales of goods | 1,798 |  |
Shanghai Weishang Business Consulting Co., Ltd. |  |  |
Related Party Balances and Transactions |  |  |
Sales of goods | ¥ 229 | 157 |
Beijing Yiche Interactive Advertising Co., Ltd. |  |  |
Related Party Balances and Transactions |  |  |
Sales of goods |  | 485 | 1,453
Kunshan Siwopu Intelligent Equipment Co., Ltd. |  |  |
Related Party Balances and Transactions |  |  |
Sales of goods |  | ¥ 370 |
Beijing Bit Ep Information Technology Co., Ltd. |  |  |
Related Party Balances and Transactions |  |  |
Sales of goods |  |  | 4,402
Beijing Bitauto Interactive Technology Co., Ltd. |  |  |
Related Party Balances and Transactions |  |  |
Sales of goods |  |  | 1,974
Beijing Yiche Information Science and Technology Co., Ltd. |  |  |
Related Party Balances and Transactions |  |  |
Sales of goods |  |  | ¥ 525

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