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Income taxes (Details Narrative) |  | 12 Months Ended
--- | --- | ---
Dec. 22, 2017 | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2017
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Operating loss carryforwards |  |  |  | $ 8,900,000 |  |
Operating loss carryforwards, description |  |  |  | future operating income through 2036 |  |
U.S. corporate tax rate | 0.35 | 0.21 |  |  |  |
Income tax description |  | As the Company has a September 30 fiscal year-end, the lower corporate income tax rate will be phased in, resulting in a U.S. statutory federal rate of approximately 24.5% for our fiscal year ending September 30, 2018, and 21% for subsequent fiscal years. Accordingly, we have to remeasure our deferred tax assets on net operating loss carryforward in the U.S. at the lower enacted cooperated tax rate of 21% |  |  |  |
Percentage of deferred tax assets, valuation allowance |  | 100.00% |  |  |  | 100.00%
Tax cuts and jobs act net operating loss carryforwards tax payable |  | The change in rate has caused us to remeasure all U.S. deferred income tax assets and liabilities for temporary differences and net operating loss (NOL) carryforwards and recorded a one-time income tax payable in 8 years |  |  |  |
Foreign tax rate |  | 25.00% | 25.00% | 25.00% | 25.00% |
Deferred Tax Assets, Valuation Allowance |  | $ 9,032,129 | $ 9,032,129 | $ 9,032,129 | $ 9,032,129 |
HONG KONG |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Foreign tax rate |  | 16.50% |  |  |  |
CHINA |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Foreign tax rate |  | 25.00% |  |  |  |
CHINA | Foreign Tax Authority [Member] |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |
Operating loss carryforwards |  |  |  | $ 20,200,000 |  |
Operating loss carryforwards, description |  |  |  | the Company had net operating loss carry forwards of approximately of $20.2 million in PRC tax jurisdiction, which expires by 2022 |  |

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