FAIR VALUE MEASUREMENTS - Summary of Quantitative Inputs (Details) - Fair Value, Inputs, Level 3 - China Branding Group Limited	Dec. 31, 2019	Dec. 31, 2018
Expected volatility | CBG Financing Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	0.8500	0.7000
Expected volatility | CBG Acquisition Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	0.7500	0.7000
Risk-free interest rate | CBG Financing Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	0.0160	0.0252
Risk-free interest rate | CBG Acquisition Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants, measurement input	0.0165	0.0246
Expected remaining term (years) | CBG Financing Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected remaining term (years)	8 months 23 days	1 year 8 months 23 days
Expected remaining term (years) | CBG Acquisition Warrants
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected remaining term (years)	3 years 8 months 19 days	4 years 8 months 19 days