“…Based on prior literature, we control for firm size, financial characteristics, corporate governance characteristics, stock market trading characteristics, nature of ownership, and other characteristics of the enterprise. We add control variables to capture firm size, performance effects and other financial characteristics, such as asset size (SIZE), the asset liability ratio (LEV), capital intensity (INTEN), fixed assets (FIXED_ASSET), operating income before depreciation (ROA), net operating cash flow (CASH_FLOW), retained earnings ratio (RE_EARNING), the growth rate of operating income (GROWTH), annual earnings per share (RET), the annual volatility of the stock price (VOLATILITY), ownership concentration (OWNCON), and the executive shareholding ratio (EXCHH) (Frost, 1997;Healy and Palepu, 2001;Ben-Amar and Zeghal, 2010;Lee et al, 2016;Loukil et al, 2020;Huang and Yuan, 2021). In addition, we add other control variables, such as the percentage of independent directors (INDEP) (Jiraporn et al, 2018) and the number of board meetings held each year (MEETING), to capture the firm's internal control level.…”