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v3.25.2

TAXES (Details) | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | 24 Months Ended | 36 Months Ended
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Dec. 31, 2020 CNY (¥) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Sep. 30, 2019 CNY (¥) | Dec. 31, 2021 | Sep. 30, 2020 CNY (¥) | Sep. 30, 2019 USD ($) | Dec. 31, 2024 CNY (¥) | Dec. 31, 2023 | Dec. 31, 2020 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2024 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 CNY (¥)
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable income (in percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 12.50% | 12.50%
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual taxable income | ¥ |  |  |  |  |  |  |  |  | ¥ 1,000,000 |  |  |  |  |  |
Gansu QLS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Favorable tax rate (in percent) |  | 15.00% | 15.00% | 15.00% |  |  |  |  |  |  |  |  |  |  |
Annual taxable income less than or equal to RMB one million, approximately USD one hundred fifty four thousand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Favorable tax rate (in percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.50% | 2.50%
Annual taxable income |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 154,000 | ¥ 1,000,000
Enterprise taxable income (in percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% | 20.00%
Annual taxable income exceeding RMB one million, approximately USD one hundred fifty four thousand, but not more than RMB three million, approximately USD four hundred sixty five thousand |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable income (in percent) |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  | 50.00% | 50.00%
Enterprise taxable income (in percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% | 20.00%
Favorable income tax (in percent) |  |  |  |  |  | 10.00% |  |  |  | 5.00% |  |  |  |  |
Annual taxable income exceeding RMB one million, approximately USD one hundred fifty four thousand, but not more than RMB three million, approximately USD four hundred sixty five thousand | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual taxable income |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 465,000 | ¥ 3,000,000
Annual taxable income exceeding RMB one million, approximately USD one hundred fifty four thousand, but not more than RMB three million, approximately USD four hundred sixty five thousand | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual taxable income |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 154,000 | ¥ 1,000,000
Hong Kong |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base profit for calculating tax rate |  | $ 0 | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |
Hong Kong | Scenario One |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Favorable tax rate (as a percent) |  |  |  |  |  |  |  | 8.25% |  |  |  |  |  |  |
Base profit for calculating tax rate |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |  |  |  |
Hong Kong | Scenario Two |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Favorable tax rate (as a percent) |  |  |  |  |  |  |  | 16.50% |  |  |  |  |  |  |
Base profit for calculating tax rate |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |  |  |  |
China |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate income tax rate (in percent) |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Statutory income tax rate (in percent) |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Preferential tax rate (in percent) |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |
China | All of the company's affiliated entities other than Gansu QLS and Chengdu QLS Gansu QLS and Chengdu QLS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual taxable income | ¥ 1,000,000 |  |  |  | ¥ 1,000,000 |  | ¥ 1,000,000 |  |  |  | $ 154,000 | ¥ 1,000,000 |  |  |
Enterprise taxable income (in percent) |  |  |  |  |  |  |  |  | 20.00% |  | 20.00% | 20.00% | 20.00% |  |
China | All of the company's affiliated entities other than Gansu QLS and Chengdu QLS Gansu QLS and Chengdu QLS | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual taxable income |  |  |  |  |  |  |  |  |  |  | $ 465,000 | ¥ 3,000,000 | ¥ 3,000,000 |  |
Taxable income (in percent) |  |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |
Favorable income tax (in percent) |  |  |  |  |  |  |  |  |  |  | 10.00% | 10.00% |  |  |
China | All of the company's affiliated entities other than Gansu QLS and Chengdu QLS Gansu QLS and Chengdu QLS | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual taxable income |  |  |  |  |  |  |  |  |  |  | $ 154,000 | ¥ 1,000,000 | ¥ 1,000,000 |  |
Taxable income (in percent) |  |  |  |  |  |  |  |  | 25.00% |  | 25.00% | 25.00% | 25.00% |  |
Favorable income tax (in percent) |  |  |  |  |  |  |  |  | 5.00% |  | 5.00% | 5.00% | 5.00% |  |
Western Region |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Favorable tax rate (in percent) |  | 15.00% | 15.00% | 15.00% |  |  |  |  |  |  |  |  |  |  |

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