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SUBSEQUENT EVENTS - Additional Information (Detail) - HKD ($)
Mar. 13, 2020
Dec. 31, 2019
Subsequent event [Line Items]    
Equity ownership percent   20.00%
Subsequent event [Member]    
Subsequent event [Line Items]    
Purchase Consideration $ 105,000,000  
Subsequent event [Member] | MrDinggui Yan [Member] | China Smart pay [Member]    
Subsequent event [Line Items]    
Equity ownership percent 29.80%  
Subsequent event [Member] | Keen Best [Member]    
Subsequent event [Line Items]    
Equity Percent Acquired 35.00%  
Subsequent event [Member] | Keen Best [Member] | Union Ever new Investment Limited [Member]    
Subsequent event [Line Items]    
Equity ownership percent 100.00%