Study on the independent director system of listed firms in China Study on the validation of independent director system of listed company in China Study on earnings conservatism of listed firms in China Study on the Independent Director System Study on the imperial examination system of Ming dynasty of China Study on the outside director institution of China Study on the imperial examination system of Qing Dynasty of China Study on the province directly managing county system reform in China Survey on the independent innovation of non-state-owned enterprises in China Study of the holistic regulation system of charities in China