Annual report pursuant to Section 13 and 15(d)

Bank Loans (Details) - Schedule of long-term bank loans (Parentheticals)

v3.21.2
Bank Loans (Details) - Schedule of long-term bank loans (Parentheticals)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Due on August 28, 2020 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate   4.75%
Debt instrument, maturity date Aug. 28, 2020  
Long-term debt, description Guaranteed by Hong Long, Xinrong Zhuo and Ping Lin.  
Due on January 30, 2023 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate 4.90% 4.90%
Debt instrument, maturity date Jan. 30, 2023  
Long-term debt, description Guaranteed by Xinrong Zhuo and Ping Lin and collateralized by 2 fishing vessels and collateralized by two related parties' investments in equity interest of one PRC local banks.  
Due on November 27, 2023 [Member] | China Development Bank [Member]    
Debt Instrument [Line Items]    
Annual interest rate 5.145% 5.145%
Debt instrument, maturity date Nov. 27, 2023  
Long-term debt, description guaranteed by Xinrong Zhuo, Honghong Zhuo, Mr. and Mrs. Zhiyan Lin,17 fishing vessels and 7 Hong Long's fishing vessels  
Debt ratio of borrower 80.00%  
Due on March 28, 2025 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate 4.949% 4.949%
Debt instrument, maturity date Mar. 28, 2025  
Long-term debt, description Guaranteed by Hong Long, Xinrong Zhuo, Ping Lin and collateralized by 20 fishing vessels.  
Due on September 30, 2020 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate   4.75%
Debt instrument, maturity date Sep. 30, 2020  
Long-term debt, description Guaranteed by Hong Long, Xinrong Zhuo, Ping Lin and collateralized by equity investment of 67 million shares of Hong Long in Xiamen International Bank.  
Due on August 21, 2026 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate 4.70% 4.70%
Debt instrument, maturity date Aug. 21, 2026  
Long-term debt, description Guaranteed by Pin Lin, Xinrong Zhuo and Yaohua Zhuo, 15 fishing vessels, the Land Use Right of B2 plot in central business district on the north shore of Minjiang river.  
Due on October 21, 2025 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate 4.70% 4.70%
Debt instrument, maturity date Oct. 21, 2025  
Long-term debt, description Guaranteed by Pin Lin, Xinrong Zhuo, Yaohua Zhuo and Hong Long, 15 fishing vessels and 1 transport vessel, the Land Use Right of B2 plot in central business district on the north shore of Minjiang river.  
Due on July 30, 2026 [Member] | China Development Bank [Member]    
Debt Instrument [Line Items]    
Annual interest rate 5.39% 5.39%
Debt instrument, maturity date Jul. 30, 2026  
Long-term debt, description Guaranteed by Xinrong Zhuo, 11 fishing vessels and 6 Hong Long's fishing vessels, real estate of Mingguang Wanhao Property co., LTD., totalled area 22,123.50m2  
Debt ratio of borrower 80.00%  
Due on April 21, 2028 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate 4.65%  
Debt instrument, maturity date Apr. 21, 2028  
Long-term debt, description Guaranteed by Pin Lin, Xinrong Zhuo, Yaohua Zhuo, Hong Long and Huanghai Shipbuilding Co., Ltd., the Land Use Right of B2 plot in central business district on the north shore of Minjiang river, 1 vessel.  
Due on December 21, 2028 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate 4.65%  
Debt instrument, maturity date Dec. 21, 2028  
Long-term debt, description Guaranteed by Pin Lin, Xinrong Zhuo, Yaohua Zhuo, Hong Long and Huanghai Shipbuilding Co., Ltd., the Land Use Right of B2 plot in central business district on the north shore of Minjiang river, 1 vessel.  
Due on August 21, 2022 [Member] | Export-Import Bank of China [Member]    
Debt Instrument [Line Items]    
Annual interest rate 2.20%  
Debt instrument, maturity date Aug. 21, 2022  
Long-term debt, description Guaranteed by Hong Long, Xinrong Zhuo and Pin Lin.  
Due on June 27, 2025 [Member] | Bank of Communications [Member]    
Debt Instrument [Line Items]    
Annual interest rate 4.65%  
Debt instrument, maturity date Jun. 27, 2025  
Long-term debt, description Guaranteed by Xinrong Zhuo, Huanghai Shipbuilding Co., Ltd. and Fujian Jingfu Ocean Fishery Development Co., Ltd..