Note 4 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Foreign Currency Exchange Rates [Table Text Block]

	As of December 31,
	2022		2021
Balance sheet items, except for equity accounts		6.9646		6.3757

	Year Ended December 31,
	2022		2021
Items in the statements of operations and comprehensive loss		6.7261		6.4515

Property, Plant and Equipment, Useful Life [Table Text Block]

Leasehold improvements (years)	3
Vehicles (years)	5
Office equipment (years)	3	-	5
Electronic devices (years)	5

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

			Fair value measurement at reporting date using
	As of December 31, 2022		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	US$(’000)		US$(’000)		US$(’000)		US$(’000)
Warrant liabilities		185		-		-		185

			Fair value measurement at reporting date using
	As of December 31, 2021		Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	US$(’000)		US$(’000)		US$(’000)		US$(’000)
Warrant liabilities		2,039		-		-		2,039

Disaggregation of Revenue [Table Text Block]

	Year Ended December 31,
	2022		2021
	US$(’000)		US$(’000)
Internet advertising and related service
--distribution of the right to use search engine marketing service		22,262		39,224
--online advertising placements		3,548		7,442
Ecommerce O2O advertising and marketing services		-		662
Blockchain-based SaaS services		425		-
Total revenues	$	26,235	$	47,328

	Year Ended December 31,
	2022		2021
	US$(’000)		US$(’000)
Revenue recognized over time		25,835		47,328
Revenue recognized at a point in time		400		-
Total revenues	$	26,235	$	47,328

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

	Contract liabilities
	US$(’000)
Balance as of January 1, 2021		1,436
Exchange translation adjustment		34
Revenue recognized from beginning contract liability balance		(1,390	)
Advances received from customers related to unsatisfied performance obligations		1,165
Balance as of December 31, 2021		1,245
Exchange translation adjustment		(105	)
Revenue recognized from beginning contract liability balance		(1,104	)
Advances received from customers related to unsatisfied performance obligations		703
Balance as of December 31, 2022		739

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

	Operating leases
	US$(’000)
Year ending December 31,
-2023		447
-2024		313
-2025		328
-2026		345
-2027		362
-thereafter		444
Total undiscounted lease payments		2,239
Less: imputed interest		(357	)
Operating lease liabilities as of December 31, 2022	$	1,882
Including:
Operating lease liabilities		347
Operating lease liabilities-Non current		1,535
	$	1,882

Lease, Cost [Table Text Block]

	Year Ended December 31,
	2022		2021
	US$(’000)		US$(’000)
Long-term operating lease contracts		459		302
Short-term operating lease contracts		48		60
Total		507		362

	Year Ended December 31,
	2022			2021
Operating cash flows used for operating leases (US$’000)		361			210
Right-of-use assets obtained in exchange for new lease liabilities (US$’000)		252			2,186
Weighted-average remaining lease term (years)		5.75			7.12
Weighted-average discount rate		6	%		6	%