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Payables to Former Subsidiaries, Net (Details Textual) - Apr. 10, 2020
USD ($)
CNY (¥)
Amount of unpaid inventories cost $ 4,300,000  
Mr. Yunfei Li [Member]    
Amount of unpaid inventories cost 1,000,000  
Mr. Yunfei Li [Member] | RMB [Member]    
Amount of unpaid inventories cost | ¥   ¥ 7,000,000
Mr. Ping Shen [Member]    
Amount of unpaid inventories cost 2,300,000  
Mr. Ping Shen [Member] | RMB [Member]    
Amount of unpaid inventories cost | ¥   16,000,000
Asia EVK [Member]    
Amount of unpaid inventories cost $ 1,000,000  
Asia EVK [Member] | RMB [Member]    
Amount of unpaid inventories cost | ¥   ¥ 7,300,000