an empirical study based on a-share listed companies in China an empirical research on the listed companies in China an empirical study based on the firms in China empirical research based on listed companies in China the empirical tests based on the M&A samples of listed companies in China 连锁董事的战略与绩效影响：基于中国A股上市公司的实证研究：an empirical study based on a-share listed companies in China an emperical study on Chinese listed companies an empirical study based on small and medium sized enterprises of China an empirical study based on the data of the listed companies of central enterprises an empirical study based on Chinese experience