Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Deferred tax liabilities	$ 0	$ 0
Deferred tax assets:
Allowance for obsolete and slow-moving inventories	0	0
Impairment on property, plant and equipment	0	2,907,548
Impairment on prepaid land lease	0	883,884
Exploration costs	1,952,783	1,908,087
Compensation costs of unexercised stock options	0	74,883
PRC tax losses	19,621,674	21,643,028
US federal net operating loss	1,308,335	1,045,503
Total deferred tax assets	22,882,792	28,462,933
Valuation allowance	(9,982,758)	(9,872,706)
Net deferred tax asset	$ 12,900,034	$ 18,590,227