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Other Non-Current Assets | 12 Months Ended
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Dec. 31, 2023
Other Assets, Noncurrent [Abstract] |
Other Non-Current Assets |
10. | OTHER NON-CURRENT ASSETS
Other non-current assets as of December 31, 2022 and 2023 are as follows: ​
​ | ​ | ​ | ​ | ​
​ |  | As of December 31,
​ | ​ | 2022 | ​ | 2023
​ |  | RMB |  | RMB
Prepayments for purchase of property and equipment |  | 46,083 |  | 77,596
Demonstration fleet |  | 4,936 |  | 3,819
Long-term deposits |  | 3,836 |  | 8,612
Others |  | 2,243 |  | 141
Other non-current assets |  | 57,098 |  | 90,168
​ Long-term deposits mainly consist of rental deposit for offices and production capacity which will not be collectible within one year.

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