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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) | Jun. 30, 2022 | Dec. 31, 2021
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Income Tax Disclosure [Abstract] |  |
Deferred tax liabilities |  |
Deferred tax assets: |  |
Exploration costs | 1,855,050 | 1,952,783
PRC tax losses | 17,400,838 | 19,621,674
US federal net operating loss | 1,336,405 | 1,308,335
Total deferred tax assets | 20,592,293 | 22,882,792
Valuation allowance | (10,016,934) | (9,982,758)
Net deferred tax asset | $ 10,575,359 | $ 12,900,034

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