Note 13 - Subsequent Events - Convertible Notes Payable (Details) - USD ($)		Mar. 30, 2020	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018
Convertible note payable				$ 444,581	$ 513,356
Subsequent Event [Member]
Convertible note payable		$ 470,631
Convertible Note Payable Number 5.19 [Member] | i2China Mgt LLC [Member]
Principal Amount				16,000
Convertible note payable				$ 16,000
Interest rate	[1]			1.85%
Conversion rate (in dollars per share)				$ 0.25
Convertible Note Payable Number 5.19 [Member] | Subsequent Event [Member] | i2China Mgt LLC [Member]
Convertible note payable		16,000
Convertible Note Payable Number 8.20 [Member] | Subsequent Event [Member] | i2China Mgt LLC [Member]
Principal Amount			$ 48,000
Convertible note payable		8,000	$ 48,000
Interest rate	[1]		1.85%
Conversion rate (in dollars per share)			$ 0.25
Stephen Chen [Member]
Convertible note payable				$ 428,581	513,356
Stephen Chen [Member] | Convertible Note Payable Number One [Member]
Principal Amount				144,426
Convertible note payable				$ 114,026	144,426
Interest rate	[1]			0.75%
Conversion rate (in dollars per share)				$ 0.168
Stephen Chen [Member] | Convertible Note Payable Number One [Member] | Subsequent Event [Member]
Convertible note payable		114,026
Stephen Chen [Member] | Convertible Note Payable Number Two [Member]
Principal Amount				$ 262,500
Convertible note payable				$ 262,500	262,500
Interest rate	[1]			0.65%
Conversion rate (in dollars per share)				$ 0.1875
Stephen Chen [Member] | Convertible Note Payable Number Two [Member] | Subsequent Event [Member]
Convertible note payable		262,500
Stephen Chen [Member] | Convertible Note Payable Number 3.19 [Member]
Principal Amount				$ 72,200
Convertible note payable				$ 39,620
Interest rate	[1]			1.85%
Conversion rate (in dollars per share)				$ 0.25
Stephen Chen [Member] | Convertible Note Payable Number 3.19 [Member] | Subsequent Event [Member]
Convertible note payable		39,620
Stephen Chen [Member] | Convertible Note Payable Number 4.19 [Member]
Principal Amount				$ 12,435
Convertible note payable				$ 12,435
Interest rate	[1]			1.61%
Conversion rate (in dollars per share)				$ 0.25
Stephen Chen [Member] | Convertible Note Payable Number 4.19 [Member] | Subsequent Event [Member]
Convertible note payable		12,435
Stephen Chen [Member] | Convertible Note Payable Number 6.20 [Member] | Subsequent Event [Member]
Principal Amount			$ 216,600
Convertible note payable		18,050	$ 216,600
Interest rate	[1]		1.85%
Conversion rate (in dollars per share)			$ 0.25
Stephen Chen [Member] | Convertible Note Payable Number 7.20 [Member] | Subsequent Event [Member]
Principal Amount			$ 30,000
Convertible note payable			$ 30,000
Interest rate			1.85%
Conversion rate (in dollars per share)			$ 0.25

[1] The Short-Term Applicable Federal Rate