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Commitments and Contingencies (Details) - Guarantee [Member]
6 Months Ended
Dec. 31, 2019
USD ($)
Tangshan Long Tang Trading Co., Ltd (“Long Tang”) [Member]  
Name of party being guaranteed Tangshan Long Tang Trading Co., Ltd (“Long Tang”)
Guaranteed amount $ 2,116,268
Guarantee expiration date Dec. 29, 2017
Beijing Lianlv (borrower) [Member]  
Name of party being guaranteed Beijing Lianlv (borrower)
Guaranteed amount $ 9,909,237
Guarantee expiration date Apr. 11, 2019