Segment Reporting (Details) - USD ($)	3 Months Ended			6 Months Ended
	Dec. 31, 2019		Dec. 31, 2018	Dec. 31, 2019		Dec. 31, 2018
Revenues
- Related party			$ 75,000			$ 397,000
- Third parties	2,021,124		10,440,287	3,807,350		16,617,820
Total revenues	2,021,124		10,515,287	3,807,350		17,014,820
Cost of revenues	755,645		8,556,597	1,439,049		13,640,429
Gross profit	1,265,479		1,958,690	2,368,301		3,374,391
Depreciation and amortization	82,533		25,565	237,011		51,280
Total capital expenditures	$ 2,482		$ 8,534	$ 7,020		$ 9,357
Gross margin%	62.60%		18.60%	62.20%		18.60%
Shipping Agency and Management Services [Member]
Revenues
- Related party
- Third parties	500,000		889,070	1,000,000		889,070
Total revenues	500,000		889,070	1,000,000		889,070
Cost of revenues	66,584		809,040	162,406		809,040
Gross profit	433,416		80,030	837,594		80,030
Depreciation and amortization	79,144			181,918
Total capital expenditures	$ 2,482			$ 7,020
Gross margin%	86.70%		9.00%	83.80%		9.00%
Inland Transportation Management Services [Member]
Revenues
- Related party			$ 75,000			$ 397,000
- Third parties			345,000			943,000
Total revenues			420,000			1,340,000
Cost of revenues			20,000			79,874
Gross profit			400,000			1,260,126
Depreciation and amortization			20,339			40,826
Total capital expenditures
Gross margin%	0.00%		95.20%	0.00%		95.20%
Freight Logistics Services [Member]
Revenues
- Related party
- Third parties	1,503,500	[1]	8,978,923	2,745,641	[2]	14,466,476
Total revenues	1,503,500		8,978,923	2,745,641		14,466,476
Cost of revenues	673,646	[1]	7,497,666	1,221,329	[2]	12,463,658
Gross profit	829,854		1,481,257	1,524,312		2,002,818
Depreciation and amortization			475	7,686		951
Total capital expenditures
Gross margin%	55.20%		16.50%	55.50%		16.50%
Container Trucking Services [Member]
Revenues
- Related party
- Third parties	17,624		227,294	61,709		319,274
Total revenues	17,624		227,294	61,709		319,274
Cost of revenues	15,415		229,891	55,314		287,857
Gross profit	2,209		(2,597)	6,395		31,417
Depreciation and amortization	3,389		4,751	47,407		9,503
Total capital expenditures			$ 8,534			$ 9,357
Gross margin%	12.50%		(1.10%)	10.40%		(1.10%)

[1] For certain freight logistics contracts that the Company entered into with customers starting from first quarter of fiscal year 2020, the Company (i) acts as an agent in arranging the relationship between the customer and the third-party service provider and (ii) does not control the services rendered to the customers, revenues related to these contracts are presented net of related costs. For the three months ended December 31, 2019, gross revenues and gross cost of revenues related to these contracts amounted to approximately $10.8 million and $10.1 million, respectively.

[2] For certain freight logistics contracts that the Company entered into with customers starting from first quarter of fiscal year 2020, the Company (i) acts as an agent in arranging the relationship between the customer and the third-party service provider and (ii) does not control the services rendered to the customers, revenues related to these contracts are presented net of related costs. For the six months ended December 31, 2019, gross revenues and gross cost of revenues related to these contracts amounted to approximately $20.0 million and $18.5 million, respectively.