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Taxation (Details) - Schedule of loss before income taxes - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Schedule of Loss Before Income Taxes [Abstract]      
Non-PRC $ (15,397) $ (28,212) $ (54,627)
PRC (4,367) (17,872) (8,603)
Total $ (19,764) $ (46,084) $ (63,230)