7.	Other current assets, net

	As of December 31,
	2020						2019
	Gross		Allowance for doubtful accounts		Net		Gross		Allowance for doubtful accounts			Net
	US$('000)		US$('000)		US$('000)		US$('000)		US$('000)			US$('000)

Staff advances for business operations		18		-		18		11		-			11
Loan to an unrelated party		1,444		-		1,444		-		-			-
Overdue deposits		-		-		-		717		(717	)		-
Total		1,462		-		1,462		728		(717	)		11

As of

December 31, 2020,

other current assets primarily include a temporary loan that the Company provided to an unrelated party during the year. This loan is unsecured, interest free and is expected to be fully repaid to the Company in

April 2021.

As of

December 31, 2019,

other current assets primarily included an approximately

RMB5

million (approximately

US$0.72

million) overdue contractual deposit relating to an advertising resource purchase contract that had expired. Based on the assessment of the collectability, the Company had provided full allowance against this balance as of

December 31, 2019.

For the year ended

December 31, 2020,

the Company charged off this overdue deposit receivable against its related allowance, as all means of collection have been exhausted and the potential for recovery is considered remote