Institutional Investor Visit, Institutional Environment and Corporate Investment Efficiency 并列题名：Institutional Investor Visit, Institutional Environment and Corporate Investment Efficiency Managerial contro, institutional environment and corporate governance efficiency Research on institutional environment, managerial power and investment efficiency 并列题名：Research on institutional environment, managerial power and investment efficiency Ultimate ownership structure，institutional environment and corporate bond contract terms Institutional background, quality of financial information disclosure and company investments efficiency Institution environment, managerial behavior and corporate efficiency Institutional investors shareholding, corporate investment and corporate performance Institutional investors' participation in corporate governance