Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net loss	$ (1,143)	$ (717)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	322	554
Amortization of operating lease right-of-use assets	106	60
Share-based compensation expenses	35	56
Provision for allowance for credit losses	301	0
Deferred taxes	(1)	(2)
Disposal of fixed assets	3	0
Change in fair value of warrant liabilities	(101)	(795)
Other non-operating income	(72)	(45)
Changes in operating assets and liabilities
Accounts receivable	(56)	(159)
Prepayment and deposit to suppliers	171	914
Other current assets	(1)	13
Accounts payable	10	(373)
Advances from customers	(27)	(203)
Accrued payroll and other accruals	(174)	(66)
Other current liabilities	(184)	(36)
Taxes payable	(8)	7
Lease payment liability related to short-term leases	0	(42)
Operating lease liabilities	(97)	(56)
Net cash used in operating activities	(916)	(890)
Cash flows from investing activities
Repayment of short-term loans from ownership investee entities	0	13
Short-term loan to unrelated parties	(2,000)	(2,500)
Repayment of short-term loans and interest income from unrelated parties	123	1,029
Net cash used in investing activities	(1,877)	(1,458)
Cash flows from financing activities
Net cash provided by/(used in) financing activities	0	0
Effect of exchange rate fluctuation on cash and cash equivalents	(6)	(1)
Net decrease in cash and cash equivalents	(2,799)	(2,349)
Cash and cash equivalents at beginning of the period	4,391	7,173
Cash and cash equivalents at end of the period	1,592	4,824
Supplemental disclosure of cash flow information
Income taxes paid	0	0
Interest expense paid	$ 0	$ 0