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Note 7 - Investment Properties (Details Textual) ¥ in Thousands, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 10, 2024 USD ($) | Feb. 01, 2023 USD ($) | Feb. 01, 2023 CNY (¥) | Jul. 31, 2024 CNY (¥) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2010 USD ($) | Jun. 30, 2010 CNY (¥) | Jun. 30, 2024 CNY (¥)
Mao Ye [Member] |  |  |  |  |  |  |  |  |
Monthly Lease Revenue Amount |  | $ 2 | ¥ 15 |  |  |  |  |  |
Operating Lease, Lease Income |  |  |  |  | $ 25 | $ 25 |  |  |
Depreciation |  |  |  |  | 14 | 14 |  |  |
Real Estate Investments, Net |  |  |  |  | 40 | 53 |  |  |
Jiang Huai [Member] |  |  |  |  |  |  |  |  |
Operating Lease, Lease Income |  |  |  |  | 2 | 0 |  |  |
Depreciation |  |  |  |  | 25 | 25 |  |  |
Payments to Acquire Projects |  |  |  | ¥ 3,600 |  |  | $ 580 | ¥ 3,600 |
Real Estate Investments, Net |  |  |  |  | 113 | 137 |  |  | ¥ 990
FuLi [Member] |  |  |  |  |  |  |  |  |
Monthly Lease Revenue Amount | $ 1 |  |  |  |  |  |  |  |
Operating Lease, Lease Income |  |  |  |  | 9 | 1 |  |  |
Depreciation |  |  |  |  | 28 | 28 |  |  |
Real Estate Investments, Net |  |  |  |  | 192 | 217 |  |  |
CHINA |  |  |  |  |  |  |  |  |
Operating Lease, Lease Income |  |  |  |  | 36 | 26 |  |  |
Depreciation |  |  |  |  | $ 67 | $ 67 |  |  |
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Other Nonoperating Income (Expense) | Other Nonoperating Income (Expense) |  |  |

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