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INVESTMENTS (Details) ¥ in Thousands, $ in Thousands |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 30, 2025 | Nov. 30, 2025 | Jun. 30, 2024 CNY (¥) | May 31, 2024 CNY (¥) | Aug. 31, 2021 CNY (¥) | Jun. 30, 2019 | Dec. 31, 2025 CNY (¥) | Dec. 31, 2024 CNY (¥) | Dec. 31, 2020 | Dec. 31, 2025 USD ($) | Jul. 31, 2025 | May 05, 2024 USD ($) | Mar. 31, 2024 | Dec. 31, 2022 CNY (¥) | Jul. 31, 2022 CNY (¥) | Jul. 31, 2022 USD ($) | Apr. 30, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥) | Jul. 31, 2021 CNY (¥) | Mar. 31, 2021 CNY (¥) | Nov. 30, 2020 USD ($) | May 31, 2020 | Apr. 30, 2019 USD ($) | Dec. 31, 2014 USD ($) | Feb. 28, 2014 | Feb. 28, 2013
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  | ¥ 171,558 | ¥ 297,223 |  | $ 24,532 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maxline Holdings Limited Maxline |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment ownership ( as a percentage) |  |  |  |  |  |  | 29.00% |  |  | 29.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nanyang Biologics Pte Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 14.54% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beijing Weiming Naonao Technology Co. Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment ownership ( as a percentage) |  |  |  |  |  |  |  |  |  |  | 30.00% |  | 21.6969% |  |  |  |  |  |  |  |  | 30.00% |  |  |  |
Investments accounted for under cost method |  |  |  |  |  |  |  | ¥ 58,474 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest | 8.30% |  |  |  |  |  | 8.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Zte9 Network Technology Co. Ltd. Wuxi |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment ownership ( as a percentage) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30.15% | 51.50%
Percentage of equity interest |  |  |  |  |  |  | 5.00% |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost method investments | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |
Shanghai Ronglei Culture Communication Co., Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 12.92% | 12.92% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost method investments |  |  |  |  |  |  |  | ¥ 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shanghai The9 Education Technology Co Ltd |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 19.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dragonfly Ventures II, L.P. ("Dragonfly") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments accounted for under cost method |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 19,500 |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 1.19% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost method investments |  |  |  |  |  |  | ¥ 19,520 | 19,520 |  | $ 2,791 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redblock Inc. ("Redblock") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments accounted for under cost method |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 1,900 |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost method investments |  |  |  |  |  |  | ¥ 1,943 | ¥ 1,943 |  | 278 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gameway Pte.Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 600 |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 1.25% | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost method investments |  |  |  |  |  |  |  | ¥ 635 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Zhenjiang Kexin Power System Design and Research Co., Ltd. ("Zhenjiang Kexin") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  | 9.90% | 9.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hangzhou Lianfang Technology Co., Ltd. ("Hangzhou Lianfang") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments accounted for under cost method |  |  |  |  | ¥ 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  | 4.00% |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Skychain Technologies Inc. ("Skychain") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 15.11% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shanghai Institute Of Visual Art Of Fudan University |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 1.28% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Kuaijin |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | ¥ 67,400 |  |  |  |  |  |  |  | $ 9,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  | 15.00% |  |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost method investments |  |  |  |  |  |  | ¥ 67,360 | 67,360 |  | 9,632 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shenma Limited ("Shenma") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | ¥ 82,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  |  |  | 19.00% |  |  | 19.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost method investments |  |  |  |  |  |  | ¥ 82,573 | 82,573 |  | 11,808 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
FF Intelligent Mobility Global Holdings Ltd. ("FF Intelligent") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments accounted for under cost method | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,000 |  | $ 5,000 |  |  |
Cost method investments |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Wuhan Weixiang Science And Technology Co., Ltd. ("WeiXiang") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest |  | 3.33% | 19.00% |  |  |  | 3.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost method investments |  |  | ¥ 60,700 |  |  |  |  | 60,698 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nano Labs, Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments accounted for under cost method |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 20,200 | $ 3,000 |  |  |  |  |  |  |  |  |  |
Investments in equity investees |  |  |  |  |  |  | ¥ 162 | 469 |  | $ 23 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SMI Vantage("SMI") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 2,100 |  |  |  |  |  |  |  |  |
Investments in equity investees |  |  |  |  |  |  |  | ¥ 550 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity investment percentage of ownership interest disposed |  |  |  |  |  |  | 7.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BeijingNaonao |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
INVESTMENTS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  | ¥ 58,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment ownership ( as a percentage) |  |  |  | 21.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments accounted for under cost method |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 3,000 |  |  |  |  |  |
Percentage of equity interest |  |  |  |  |  |  | 9.09% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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