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OTHER LONG-LIVED ASSETS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
OTHER LONG-LIVED ASSETS |
Schedule of other long-lived assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31, | ​ | December 31,
​ | ​ ​ ​ | 2024 | ​ ​ ​ | 2025 | ​ ​ ​ | 2025
​ |  | RMB |  | RMB |  | US$
​ |  | (in thousands) |  | ​(Note 3)
Prepayments for mining machines | ​ | 39,841 | ​ | — | ​ | —
Others | ​ | 1,217 | ​ | 1,226 | ​ | 175
Total |  | 41,058 |  | 1,226 |  | 175

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- Definition Tabular disclosure of noncurrent assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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