“…Closely related to risk prevention of extreme risk, tail risk, spillover etc., accurate volatility prediction can provide valuable information for market investors, policy makers, economic activities ( Bollerslev, Hood, Huss, & Pedersen, 2018 ; Ma, Liao, Zhang, & Cao, 2019 ). Although it is difficult to improve forecasting accuracy, increasing studies document that popular uncertainty indexes, EPU and VIX, contain useful information for forecasting stock market volatility ( Balcilar, Gupta, Kim, & Kyei, 2019 ; Bekaert & Hoerova, 2014 ; Brogaard & Detzel, 2015 ; Liu & Zhang, 2015 ). Specifically, Liang, Wei, and Zhang (2020) investigate the VIX's forecasting ability for eight international stock markets, the results indicate VIX index exhibits powerful predictive ability.…”